diff --git a/projects/ucap-webmessenger-app/src/app/layouts/messenger/dialogs/account/change-password.dialog.component.html b/projects/ucap-webmessenger-app/src/app/layouts/messenger/dialogs/account/change-password.dialog.component.html
index 31d82e21..dc33fc29 100644
--- a/projects/ucap-webmessenger-app/src/app/layouts/messenger/dialogs/account/change-password.dialog.component.html
+++ b/projects/ucap-webmessenger-app/src/app/layouts/messenger/dialogs/account/change-password.dialog.component.html
@@ -5,6 +5,9 @@
   <mat-card-content>
     <div fxFlex class="setting-tab">
       <ucap-account-change-password
+        [loginId]="data.loginId"
+        [phoneNumber]="data.phoneNumber"
+        [encryptedLoginPw]="data.encryptedLoginPw"
         (changePassword)="onChangePassword($event)"
       ></ucap-account-change-password>
     </div>
diff --git a/projects/ucap-webmessenger-app/src/app/layouts/messenger/dialogs/account/change-password.dialog.component.ts b/projects/ucap-webmessenger-app/src/app/layouts/messenger/dialogs/account/change-password.dialog.component.ts
index bf2cc7d3..1a403a40 100644
--- a/projects/ucap-webmessenger-app/src/app/layouts/messenger/dialogs/account/change-password.dialog.component.ts
+++ b/projects/ucap-webmessenger-app/src/app/layouts/messenger/dialogs/account/change-password.dialog.component.ts
@@ -1,24 +1,18 @@
 import { Component, OnInit, Inject, OnDestroy } from '@angular/core';
 import { MatDialogRef, MAT_DIALOG_DATA } from '@angular/material';
-import { KEY_LOGIN_RES_INFO } from '@app/types/login-res-info.type';
-import { KEY_VER_INFO } from '@app/types/ver-info.type';
-import { SessionStorageService } from '@ucap-webmessenger/web-storage';
-
-import { Store } from '@ngrx/store';
 
 import { DialogService } from '@ucap-webmessenger/ui';
-import { VersionInfo2Response } from '@ucap-webmessenger/api-public';
-import { LoginResponse } from '@ucap-webmessenger/protocol-authentication';
-import { AppAuthenticationService } from '@app/services/authentication.service';
-import { StringUtil, CharactorType } from '@ucap-webmessenger/core';
 
-import * as ServiceStore from '@app/store/messenger/service';
-import CryptoJS from 'crypto-js';
-
-export interface ChangePasswordDialogData {}
+export interface ChangePasswordDialogData {
+  loginId: string;
+  phoneNumber?: string;
+  encryptedLoginPw?: string;
+}
 
 export interface ChangePasswordDialogResult {
   choice: boolean;
+  currentLoginPw?: string;
+  newLoginPw?: string;
 }
 
 @Component({
@@ -27,170 +21,25 @@ export interface ChangePasswordDialogResult {
   styleUrls: ['./change-password.dialog.component.scss']
 })
 export class ChangePasswordDialogComponent implements OnInit, OnDestroy {
-  loginRes: LoginResponse;
-  sessionVerinfo: VersionInfo2Response;
-  isMe: boolean;
-
   constructor(
     public dialogRef: MatDialogRef<
       ChangePasswordDialogData,
       ChangePasswordDialogResult
     >,
     @Inject(MAT_DIALOG_DATA) public data: ChangePasswordDialogData,
-    private dialogService: DialogService,
-    private sessionStorageService: SessionStorageService,
-    private appAuthenticationService: AppAuthenticationService,
-    private store: Store<any>
-  ) {
-    this.sessionVerinfo = this.sessionStorageService.get<VersionInfo2Response>(
-      KEY_VER_INFO
-    );
-    this.loginRes = this.sessionStorageService.get<LoginResponse>(
-      KEY_LOGIN_RES_INFO
-    );
-  }
+    private dialogService: DialogService
+  ) {}
 
   ngOnInit() {}
 
   ngOnDestroy(): void {}
 
-  onChangePassword(info: {
-    currentLoginPw: string;
-    newLoginPw: string;
-    newConfirmLoginPw: string;
-    notValid: () => void;
-  }): void {
-    if (!info.currentLoginPw || '' === info.currentLoginPw.trim()) {
-      // 현재 비밀번호를 입력해주세요
-      info.notValid();
-      return;
-    }
-    if (!this.appAuthenticationService.isSameForPassword(info.currentLoginPw)) {
-      // "현재 비밀번호가 다릅니다"
-      info.notValid();
-      return;
-    }
-    if (!info.newLoginPw || '' === info.newLoginPw.trim()) {
-      // 신규 비밀번호를 입력해주세요
-      info.notValid();
-      return;
-    }
-    if (-1 < info.newLoginPw.indexOf(this.loginRes.userId)) {
-      // "사용자 ID를 비밀번호에 포함할 수 없습니다."
-      info.notValid();
-      return;
-    }
-    const phoneNumberOnly = !!this.loginRes.userInfo.hpNumber
-      ? this.loginRes.userInfo.hpNumber.trim().replace(new RegExp('-', 'g'), '')
-      : '';
-
-    switch (phoneNumberOnly.length) {
-      case 11:
-        if (-1 < info.newLoginPw.indexOf(phoneNumberOnly.substr(3, 4))) {
-          // "사용자 휴대폰번호를 비밀번호에 포함할 수 없습니다."
-          info.notValid();
-          return;
-        }
-        if (-1 < info.newLoginPw.indexOf(phoneNumberOnly.substr(7, 4))) {
-          // "사용자 휴대폰번호를 비밀번호에 포함할 수 없습니다."
-          info.notValid();
-          return;
-        }
-        break;
-      case 10:
-        if (-1 < info.newLoginPw.indexOf(phoneNumberOnly.substr(3, 3))) {
-          // "사용자 휴대폰번호를 비밀번호에 포함할 수 없습니다."
-          info.notValid();
-          return;
-        }
-        if (-1 < info.newLoginPw.indexOf(phoneNumberOnly.substr(6, 4))) {
-          // "사용자 휴대폰번호를 비밀번호에 포함할 수 없습니다."
-          info.notValid();
-          return;
-        }
-        break;
-
-      default:
-        break;
-    }
-
-    if (!info.newConfirmLoginPw || '' === info.newConfirmLoginPw.trim()) {
-      // "신규 비밀번호 확인을 입력해주세요"
-      info.notValid();
-      return;
-    }
-    if (info.newLoginPw !== info.newConfirmLoginPw.trim()) {
-      // "신규 비밀번호와 신규 비밀번호 확인이 다릅니다"
-      info.notValid();
-      return;
-    }
-    if (info.currentLoginPw === info.newLoginPw.trim()) {
-      // "현재 비밀번호와 새로운 비밀번호가 같습니다."
-      info.notValid();
-      return;
-    }
-    if (0 < StringUtil.includes(info.newLoginPw, CharactorType.Space)) {
-      // "비밀번호에는 공백을 입력할 수 없습니다."
-      info.notValid();
-      return;
-    }
-    if (StringUtil.isRepeat(info.newLoginPw, 3)) {
-      // "숫자나 문자를 3번이상 반복적으로 사용할 수 없습니다."
-      info.notValid();
-      return;
-    }
-    if (
-      StringUtil.isIncrements(info.newLoginPw, 3) ||
-      StringUtil.isDecrements(info.newLoginPw, 3)
-    ) {
-      // "연속되는 숫자나 문자를 3번이상 사용할 수 없습니다."
-      info.notValid();
-      return;
-    }
-
-    let combinationCount = 0;
-    if (0 < StringUtil.includes(info.newLoginPw, CharactorType.Special)) {
-      combinationCount++;
-    }
-    if (0 < StringUtil.includes(info.newLoginPw, CharactorType.Number)) {
-      combinationCount++;
-    }
-    if (0 < StringUtil.includes(info.newLoginPw, CharactorType.Charactor)) {
-      combinationCount++;
-    }
-
-    let minPwLen = 0;
-    if (2 < combinationCount) {
-      minPwLen = 8;
-    } else if (2 === combinationCount) {
-      minPwLen = 10;
-    } else if (2 > combinationCount) {
-      // "2종류 이상 조합을 해야 합니다."
-      info.notValid();
-      return;
-    }
-
-    if (info.newLoginPw.length < minPwLen) {
-      // "비밀번호는 %d가지가 조합된 경우 %d자를 넘어야 합니다."
-      info.notValid();
-      return;
-    }
-
-    this.store.dispatch(
-      ServiceStore.userPasswordSet({
-        req: {
-          loginId: this.loginRes.userId,
-          companyCode: this.loginRes.companyCode,
-          oldLoginPw: CryptoJS.enc.Hex.stringify(
-            CryptoJS.SHA256(info.currentLoginPw)
-          ),
-          newLoginPw: CryptoJS.enc.Hex.stringify(
-            CryptoJS.SHA256(info.newLoginPw)
-          )
-        }
-      })
-    );
-    this.dialogRef.close({ choice: true });
+  onChangePassword(info: { currentLoginPw: string; newLoginPw: string }): void {
+    this.dialogRef.close({
+      choice: true,
+      currentLoginPw: info.currentLoginPw,
+      newLoginPw: info.newLoginPw
+    });
   }
 
   onClickChoice(choice: boolean): void {
diff --git a/projects/ucap-webmessenger-app/src/app/services/authentication.service.ts b/projects/ucap-webmessenger-app/src/app/services/authentication.service.ts
index 91d22349..65e38deb 100644
--- a/projects/ucap-webmessenger-app/src/app/services/authentication.service.ts
+++ b/projects/ucap-webmessenger-app/src/app/services/authentication.service.ts
@@ -1,7 +1,5 @@
 import { Injectable } from '@angular/core';
 
-import CryptoJS from 'crypto-js';
-
 import {
   SessionStorageService,
   LocalStorageService
@@ -10,6 +8,7 @@ import { LocaleCode } from '@ucap-webmessenger/core';
 import { LoginInfo, KEY_LOGIN_INFO } from '../types';
 import { KEY_VER_INFO } from '@app/types/ver-info.type';
 import { KEY_LOGIN_RES_INFO } from '@app/types/login-res-info.type';
+import { PasswordUtil } from '@ucap-webmessenger/pi';
 
 @Injectable({
   providedIn: 'root'
@@ -33,7 +32,7 @@ export class AppAuthenticationService {
     this.sessionStorageService.set<LoginInfo>(KEY_LOGIN_INFO, {
       ...loginInfo,
       initPw: loginInfo.loginId === loginInfo.loginPw,
-      loginPw: CryptoJS.enc.Hex.stringify(CryptoJS.SHA256(loginInfo.loginPw))
+      loginPw: PasswordUtil.encrypt(loginInfo.loginPw)
     });
 
     if (rememberMe) {
@@ -51,11 +50,4 @@ export class AppAuthenticationService {
     this.sessionStorageService.remove(KEY_VER_INFO);
     this.sessionStorageService.remove(KEY_LOGIN_INFO);
   }
-
-  isSameForPassword(pw: string): boolean {
-    const loginInfo = this.sessionStorageService.get<LoginInfo>(KEY_LOGIN_INFO);
-    return (
-      loginInfo.loginPw === CryptoJS.enc.Hex.stringify(CryptoJS.SHA256(pw))
-    );
-  }
 }
diff --git a/projects/ucap-webmessenger-app/src/app/store/account/authentication/actions.ts b/projects/ucap-webmessenger-app/src/app/store/account/authentication/actions.ts
index b61192f1..26c09e5c 100644
--- a/projects/ucap-webmessenger-app/src/app/store/account/authentication/actions.ts
+++ b/projects/ucap-webmessenger-app/src/app/store/account/authentication/actions.ts
@@ -96,3 +96,20 @@ export const privacyAgreeFailure = createAction(
 export const privacyDisagree = createAction(
   '[Account::Authentication] Privacy Disagree'
 );
+
+export const userPasswordSet = createAction(
+  '[Account::Authentication] User Password Set',
+  props<{ req: UserPasswordSetRequest }>()
+);
+
+export const userPasswordSetSuccess = createAction(
+  '[Account::Authentication] User Password Set Success',
+  props<{
+    res: UserPasswordSetResponse;
+  }>()
+);
+
+export const userPasswordSetFailure = createAction(
+  '[Account::Authentication] User Password Set Failure',
+  props<{ error: any }>()
+);
diff --git a/projects/ucap-webmessenger-app/src/app/store/account/authentication/effects.ts b/projects/ucap-webmessenger-app/src/app/store/account/authentication/effects.ts
index e4fb861f..595f862a 100644
--- a/projects/ucap-webmessenger-app/src/app/store/account/authentication/effects.ts
+++ b/projects/ucap-webmessenger-app/src/app/store/account/authentication/effects.ts
@@ -34,7 +34,10 @@ import {
   privacyAgreeSuccess,
   increaseLoginFailCount,
   initialLoginFailCount,
-  logoutInitialize
+  logoutInitialize,
+  userPasswordSet,
+  userPasswordSetSuccess,
+  userPasswordSetFailure
 } from './actions';
 import {
   LoginInfo,
@@ -60,6 +63,10 @@ import {
   ChangePasswordDialogData,
   ChangePasswordDialogResult
 } from '@app/layouts/messenger/dialogs/account/change-password.dialog.component';
+import {
+  ServiceProtocolService,
+  UserPasswordSetResponse
+} from '@ucap-webmessenger/protocol-service';
 
 @Injectable()
 export class Effects {
@@ -273,10 +280,24 @@ export class Effects {
               width: '500px',
               height: '500px',
               disableClose: false,
-              data: {}
+              data: {
+                loginId: loginInfo.loginId,
+                encryptedLoginPw: loginInfo.loginPw,
+                phoneNumber: loginRes.userInfo.hpNumber
+              }
             });
 
             if (!!result && result.choice) {
+              this.store.dispatch(
+                userPasswordSet({
+                  req: {
+                    companyCode: loginInfo.companyCode,
+                    loginId: loginInfo.loginId,
+                    oldLoginPw: result.currentLoginPw,
+                    newLoginPw: result.newLoginPw
+                  }
+                })
+              );
             } else {
               return;
             }
@@ -324,6 +345,23 @@ export class Effects {
     )
   );
 
+  userPasswordSet$ = createEffect(() =>
+    this.actions$.pipe(
+      ofType(userPasswordSet),
+      map(action => action.req),
+      exhaustMap(req =>
+        this.serviceProtocolService.userPasswordSet(req).pipe(
+          map((res: UserPasswordSetResponse) => {
+            return userPasswordSetSuccess({
+              res
+            });
+          }),
+          catchError(error => of(userPasswordSetFailure({ error })))
+        )
+      )
+    )
+  );
+
   constructor(
     private actions$: Actions,
     private ngZone: NgZone,
@@ -334,7 +372,7 @@ export class Effects {
     private appAuthenticationService: AppAuthenticationService,
     private protocolService: ProtocolService,
     private authenticationProtocolService: AuthenticationProtocolService,
-
+    private serviceProtocolService: ServiceProtocolService,
     private dialogService: DialogService,
     @Inject(UCAP_NATIVE_SERVICE) private nativeService: NativeService,
     private logger: NGXLogger
diff --git a/projects/ucap-webmessenger-app/src/app/store/messenger/index.ts b/projects/ucap-webmessenger-app/src/app/store/messenger/index.ts
index 3d4d543f..44ba4d69 100644
--- a/projects/ucap-webmessenger-app/src/app/store/messenger/index.ts
+++ b/projects/ucap-webmessenger-app/src/app/store/messenger/index.ts
@@ -6,7 +6,6 @@ import * as EventStore from './event';
 import * as OptionStore from './option';
 import * as QueryStore from './query';
 import * as RoomStore from './room';
-import * as ServiceStore from './service';
 import * as StatusStore from './status';
 import * as SyncStore from './sync';
 import * as SettingsStore from './settings';
@@ -17,7 +16,6 @@ export interface State {
   option: OptionStore.State;
   query: QueryStore.State;
   room: RoomStore.State;
-  service: ServiceStore.State;
   status: StatusStore.State;
   sync: SyncStore.State;
   settings: SettingsStore.State;
@@ -29,7 +27,6 @@ export const effects: Type<any>[] = [
   OptionStore.Effects,
   QueryStore.Effects,
   RoomStore.Effects,
-  ServiceStore.Effects,
   StatusStore.Effects,
   SyncStore.Effects,
   SettingsStore.Effects
@@ -42,7 +39,6 @@ export function reducers(state: State | undefined, action: Action) {
     option: OptionStore.reducer,
     query: QueryStore.reducer,
     room: RoomStore.reducer,
-    service: ServiceStore.reducer,
     status: StatusStore.reducer,
     sync: SyncStore.reducer,
     settings: SettingsStore.reducer
@@ -66,9 +62,6 @@ export function selectors<S>(selector: Selector<any, State>) {
     QuerySelector: QueryStore.selectors(
       createSelector(selector, (state: State) => state.query)
     ),
-    ServiceSelector: ServiceStore.selectors(
-      createSelector(selector, (state: State) => state.service)
-    ),
     StatusSelector: StatusStore.selectors(
       createSelector(selector, (state: State) => state.status)
     ),
diff --git a/projects/ucap-webmessenger-app/src/app/store/messenger/service/actions.ts b/projects/ucap-webmessenger-app/src/app/store/messenger/service/actions.ts
deleted file mode 100644
index f6956adb..00000000
--- a/projects/ucap-webmessenger-app/src/app/store/messenger/service/actions.ts
+++ /dev/null
@@ -1,23 +0,0 @@
-import { createAction, props } from '@ngrx/store';
-
-import {
-  UserPasswordSetRequest,
-  UserPasswordSetResponse
-} from '@ucap-webmessenger/protocol-service';
-
-export const userPasswordSet = createAction(
-  '[Account::Authentication] User Password Set',
-  props<{ req: UserPasswordSetRequest }>()
-);
-
-export const userPasswordSetSuccess = createAction(
-  '[Account::Authentication] User Password Set Success',
-  props<{
-    res: UserPasswordSetResponse;
-  }>()
-);
-
-export const userPasswordSetFailure = createAction(
-  '[Account::Authentication] User Password Set Failure',
-  props<{ error: any }>()
-);
diff --git a/projects/ucap-webmessenger-app/src/app/store/messenger/service/effects.ts b/projects/ucap-webmessenger-app/src/app/store/messenger/service/effects.ts
deleted file mode 100644
index 175351cd..00000000
--- a/projects/ucap-webmessenger-app/src/app/store/messenger/service/effects.ts
+++ /dev/null
@@ -1,47 +0,0 @@
-import { Injectable } from '@angular/core';
-
-import { Actions, ofType, createEffect } from '@ngrx/effects';
-
-import { Store } from '@ngrx/store';
-
-import { NGXLogger } from 'ngx-logger';
-import { catchError, exhaustMap, map } from 'rxjs/operators';
-
-import { of } from 'rxjs';
-
-import {
-  userPasswordSet,
-  userPasswordSetSuccess,
-  userPasswordSetFailure
-} from './actions';
-import {
-  ServiceProtocolService,
-  UserPasswordSetResponse
-} from '@ucap-webmessenger/protocol-service';
-
-@Injectable()
-export class Effects {
-  userPasswordSet$ = createEffect(() =>
-    this.actions$.pipe(
-      ofType(userPasswordSet),
-      map(action => action.req),
-      exhaustMap(req =>
-        this.serviceProtocolService.userPasswordSet(req).pipe(
-          map((res: UserPasswordSetResponse) => {
-            return userPasswordSetSuccess({
-              res
-            });
-          }),
-          catchError(error => of(userPasswordSetFailure({ error })))
-        )
-      )
-    )
-  );
-
-  constructor(
-    private actions$: Actions,
-    private serviceProtocolService: ServiceProtocolService,
-    private store: Store<any>,
-    private logger: NGXLogger
-  ) {}
-}
diff --git a/projects/ucap-webmessenger-app/src/app/store/messenger/service/index.ts b/projects/ucap-webmessenger-app/src/app/store/messenger/service/index.ts
deleted file mode 100644
index 2663cade..00000000
--- a/projects/ucap-webmessenger-app/src/app/store/messenger/service/index.ts
+++ /dev/null
@@ -1,4 +0,0 @@
-export * from './actions';
-export * from './effects';
-export * from './reducers';
-export * from './state';
diff --git a/projects/ucap-webmessenger-app/src/app/store/messenger/service/reducers.ts b/projects/ucap-webmessenger-app/src/app/store/messenger/service/reducers.ts
deleted file mode 100644
index 70e7e209..00000000
--- a/projects/ucap-webmessenger-app/src/app/store/messenger/service/reducers.ts
+++ /dev/null
@@ -1,4 +0,0 @@
-import { createReducer, on } from '@ngrx/store';
-import { initialState } from './state';
-
-export const reducer = createReducer(initialState);
diff --git a/projects/ucap-webmessenger-app/src/app/store/messenger/service/state.ts b/projects/ucap-webmessenger-app/src/app/store/messenger/service/state.ts
deleted file mode 100644
index 1e05bd08..00000000
--- a/projects/ucap-webmessenger-app/src/app/store/messenger/service/state.ts
+++ /dev/null
@@ -1,9 +0,0 @@
-import { Selector, createSelector } from '@ngrx/store';
-
-export interface State {}
-
-export const initialState: State = {};
-
-export function selectors<S>(selector: Selector<any, State>) {
-  return {};
-}
diff --git a/projects/ucap-webmessenger-pi/src/lib/utils/password.util.ts b/projects/ucap-webmessenger-pi/src/lib/utils/password.util.ts
new file mode 100644
index 00000000..e95d24b2
--- /dev/null
+++ b/projects/ucap-webmessenger-pi/src/lib/utils/password.util.ts
@@ -0,0 +1,137 @@
+import CryptoJS from 'crypto-js';
+import { StringUtil, CharactorType } from '@ucap-webmessenger/core';
+
+export interface PasswordValidationOption {
+  userId?: string;
+  phoneNumber?: string;
+}
+
+export enum PasswordValidationResult {
+  Valid = 'Valid',
+  Empty = 'Empty',
+  IncludeUserId = 'IncludeUserId',
+  IncludePhoneNumber = 'IncludePhoneNumber',
+  IncludeSpace = 'IncludeSpace',
+  IncludeRepeated = 'IncludeRepeated',
+  IncludeIncrements = 'IncludeIncrements',
+  IncludeDecrements = 'IncludeDecrements',
+  LackOfCombination = 'LackOfCombination',
+  TooShortCombinationLength = 'TooShortCombinationLength'
+}
+
+export class PasswordUtil {
+  static encrypt(password: string): string {
+    return CryptoJS.enc.Hex.stringify(CryptoJS.SHA256(password));
+  }
+
+  static validate(
+    password: string,
+    option?: PasswordValidationOption
+  ): { code: PasswordValidationResult; extra?: any } {
+    if (!password || '' === password.trim()) {
+      return {
+        code: PasswordValidationResult.Empty
+      };
+    }
+
+    if (!!option && !!option.userId) {
+      if (-1 < password.indexOf(option.userId)) {
+        return {
+          code: PasswordValidationResult.IncludeUserId
+        };
+      }
+    }
+
+    if (!!option && !!option.phoneNumber) {
+      const phoneNumberOnly = option.phoneNumber
+        .trim()
+        .replace(new RegExp('-', 'g'), '');
+
+      switch (phoneNumberOnly.length) {
+        case 11:
+          if (-1 < password.indexOf(phoneNumberOnly.substr(3, 4))) {
+            return {
+              code: PasswordValidationResult.IncludePhoneNumber
+            };
+          }
+          if (-1 < password.indexOf(phoneNumberOnly.substr(7, 4))) {
+            return {
+              code: PasswordValidationResult.IncludePhoneNumber
+            };
+          }
+          break;
+        case 10:
+          if (-1 < password.indexOf(phoneNumberOnly.substr(3, 3))) {
+            return {
+              code: PasswordValidationResult.IncludePhoneNumber
+            };
+          }
+          if (-1 < password.indexOf(phoneNumberOnly.substr(6, 4))) {
+            return {
+              code: PasswordValidationResult.IncludePhoneNumber
+            };
+          }
+          break;
+        default:
+          break;
+      }
+    }
+
+    if (0 < StringUtil.includes(password, CharactorType.Space)) {
+      return {
+        code: PasswordValidationResult.IncludeSpace
+      };
+    }
+    if (StringUtil.isRepeat(password, 3)) {
+      return {
+        code: PasswordValidationResult.IncludeRepeated
+      };
+    }
+    if (StringUtil.isIncrements(password, 3)) {
+      return {
+        code: PasswordValidationResult.IncludeIncrements
+      };
+    }
+    if (StringUtil.isDecrements(password, 3)) {
+      return {
+        code: PasswordValidationResult.IncludeDecrements
+      };
+    }
+
+    let combinationCount = 0;
+    if (0 < StringUtil.includes(password, CharactorType.Special)) {
+      combinationCount++;
+    }
+    if (0 < StringUtil.includes(password, CharactorType.Number)) {
+      combinationCount++;
+    }
+    if (0 < StringUtil.includes(password, CharactorType.Charactor)) {
+      combinationCount++;
+    }
+
+    let minPwLen = 0;
+    if (2 < combinationCount) {
+      minPwLen = 8;
+    } else if (2 === combinationCount) {
+      minPwLen = 10;
+    } else if (2 > combinationCount) {
+      return {
+        code: PasswordValidationResult.LackOfCombination
+      };
+    }
+
+    if (password.length < minPwLen) {
+      return {
+        code: PasswordValidationResult.TooShortCombinationLength,
+        extra: {
+          combinationCount,
+          minPwLen
+        }
+      };
+    }
+
+    return {
+      code: PasswordValidationResult.Valid
+    };
+  }
+}
diff --git a/projects/ucap-webmessenger-pi/src/public-api.ts b/projects/ucap-webmessenger-pi/src/public-api.ts
index 4fee4a46..6bb87dda 100644
--- a/projects/ucap-webmessenger-pi/src/public-api.ts
+++ b/projects/ucap-webmessenger-pi/src/public-api.ts
@@ -12,6 +12,8 @@ export * from './lib/types/response-status.type';
 
 export * from './lib/services/pi.service';
 
+export * from './lib/utils/password.util';
+
 export * from './lib/ucap-pi.module';
 
 export * from './lib/config/urls';
diff --git a/projects/ucap-webmessenger-ui-account/src/lib/components/change-password.component.html b/projects/ucap-webmessenger-ui-account/src/lib/components/change-password.component.html
index 61744c94..47c1ca22 100644
--- a/projects/ucap-webmessenger-ui-account/src/lib/components/change-password.component.html
+++ b/projects/ucap-webmessenger-ui-account/src/lib/components/change-password.component.html
@@ -5,43 +5,137 @@
       <input
         matInput
         type="password"
-        formControlName="currentLoginPw"
-        #currentLoginPw
+        [formControl]="currentLoginPwFormControl"
       />
-      <mat-error>
-        현재 패스워드를 입력해 주세요
-      </mat-error>
     </mat-form-field>
     <mat-form-field>
       <mat-label>신규 패스워드</mat-label>
-      <input
-        matInput
-        type="password"
-        formControlName="newLoginPw"
-        #newLoginPw
-      />
-      <mat-error>
-        신규 패스워드를 입력해 주세요
-      </mat-error>
+      <input matInput type="password" [formControl]="newLoginPwFormControl" />
     </mat-form-field>
     <mat-form-field>
       <mat-label>신규 패스워드 확인</mat-label>
       <input
         matInput
         type="password"
-        formControlName="newConfirmLoginPw"
-        #newConfirmLoginPw
+        [formControl]="newConfirmLoginPwFormControl"
       />
-      <mat-error>
-        신규 패스워드 확인을 입력해 주세요
-      </mat-error>
     </mat-form-field>
 
+    <div>
+      <mat-error
+        *ngIf="
+          currentLoginPwFormControl.dirty &&
+          currentLoginPwFormControl.hasError('required')
+        "
+      >
+        현재 비밀번호를 입력해 주세요
+      </mat-error>
+      <mat-error
+        *ngIf="
+          currentLoginPwFormControl.dirty &&
+          currentLoginPwFormControl.hasError('ucapPasswordSame')
+        "
+      >
+        현재 비밀번호와 일치하지 않습니다
+      </mat-error>
+
+      <mat-error
+        *ngIf="
+          newLoginPwFormControl.dirty &&
+          newLoginPwFormControl.hasError('required')
+        "
+      >
+        신규 비밀번호를 입력해 주세요
+      </mat-error>
+      <mat-error
+        *ngIf="
+          newLoginPwFormControl.dirty &&
+          newLoginPwFormControl.hasError('ucapNotSameWith')
+        "
+      >
+        현재 비밀번호와 동일합니다
+      </mat-error>
+      <mat-error
+        *ngIf="
+          newLoginPwFormControl.dirty &&
+          newLoginPwFormControl.hasError('ucapPassword')
+        "
+      >
+        <ng-container
+          [ngSwitch]="
+            newLoginPwFormControl.getError('ucapPassword').result.code
+          "
+        >
+          <ng-container *ngSwitchCase="PasswordValidationResult.IncludeSpace">
+            비밀번호에는 공백을 입력할 수 없습니다
+          </ng-container>
+          <ng-container *ngSwitchCase="PasswordValidationResult.IncludeUserId">
+            사용자 ID를 비밀번호에 포함할 수 없습니다
+          </ng-container>
+          <ng-container
+            *ngSwitchCase="PasswordValidationResult.IncludePhoneNumber"
+          >
+            사용자 휴대폰번호를 비밀번호에 포함할 수 없습니다
+          </ng-container>
+          <ng-container
+            *ngSwitchCase="PasswordValidationResult.IncludeRepeated"
+          >
+            숫자나 문자를 3번이상 반복적으로 사용할 수 없습니다
+          </ng-container>
+          <ng-container
+            *ngSwitchCase="PasswordValidationResult.IncludeIncrements"
+          >
+            연속되는 숫자나 문자를 3번이상 사용할 수 없습니다
+          </ng-container>
+          <ng-container
+            *ngSwitchCase="PasswordValidationResult.IncludeDecrements"
+          >
+            연속되는 숫자나 문자를 3번이상 사용할 수 없습니다
+          </ng-container>
+          <ng-container
+            *ngSwitchCase="PasswordValidationResult.LackOfCombination"
+          >
+            2종류 이상 조합을 해야 합니다
+          </ng-container>
+          <ng-container
+            *ngSwitchCase="PasswordValidationResult.TooShortCombinationLength"
+          >
+            비밀번호에는 공백을 입력할 수 없습니다
+          </ng-container>
+          <ng-container *ngSwitchCase="PasswordValidationResult.IncludeSpace">
+            비밀번호는{{
+              newLoginPwFormControl.getError('ucapPassword').result.extra
+                .combinationCount
+            }}가지가 조합된 경우{{
+              newLoginPwFormControl.getError('ucapPassword').result.extra
+                .minPwLen
+            }}자를 넘어야 합니다
+          </ng-container>
+        </ng-container>
+      </mat-error>
+      <mat-error
+        *ngIf="
+          newConfirmLoginPwFormControl.dirty &&
+          newConfirmLoginPwFormControl.hasError('required')
+        "
+      >
+        신규 비밀번호 확인을 입력해 주세요
+      </mat-error>
+      <mat-error
+        *ngIf="
+          newConfirmLoginPwFormControl.dirty &&
+          newConfirmLoginPwFormControl.hasError('ucapSameWith')
+        "
+      >
+        신규 비밀번호와 신규 비밀번호 확인이 다릅니다
+      </mat-error>
+    </div>
+
     <button
       mat-raised-button
       class="submit-button bg-accent-dark"
       aria-label="패스워드 변경"
-      [disabled]="changePasswordForm.invalid || !changePasswordBtnEnable"
+      [disabled]="changePasswordForm.invalid"
       (click)="onClickChangePassword()"
     >
       패스워드 변경
diff --git a/projects/ucap-webmessenger-ui-account/src/lib/components/change-password.component.ts b/projects/ucap-webmessenger-ui-account/src/lib/components/change-password.component.ts
index c560adb3..fd07a6a9 100644
--- a/projects/ucap-webmessenger-ui-account/src/lib/components/change-password.component.ts
+++ b/projects/ucap-webmessenger-ui-account/src/lib/components/change-password.component.ts
@@ -8,10 +8,66 @@ import {
   ElementRef,
   ChangeDetectorRef
 } from '@angular/core';
-import { FormGroup, FormBuilder, Validators } from '@angular/forms';
-import { Company } from '@ucap-webmessenger/api-external';
-import { LocalStorageService } from '@ucap-webmessenger/web-storage';
-import { LoginInfo, KEY_LOGIN_INFO } from '@app/types';
+import {
+  FormControl,
+  FormGroup,
+  Validators,
+  ValidatorFn,
+  AbstractControl,
+  ValidationErrors,
+  FormBuilder
+} from '@angular/forms';
+import {
+  PasswordUtil,
+  PasswordValidationOption,
+  PasswordValidationResult
+} from '@ucap-webmessenger/pi';
+
+export function ucapPassword(option: PasswordValidationOption): ValidatorFn {
+  return (control: AbstractControl): ValidationErrors | null => {
+    const result = PasswordUtil.validate(control.value, option);
+    return PasswordValidationResult.Valid !== result.code
+      ? { ucapPassword: { result } }
+      : null;
+  };
+}
+
+export function ucapPasswordSame(value: string): ValidatorFn {
+  return (control: AbstractControl): ValidationErrors | null => {
+    return !!value && value !== PasswordUtil.encrypt(control.value)
+      ? { ucapPasswordSame: true }
+      : null;
+  };
+}
+
+export function ucapNotSameWith(targetControl: AbstractControl): ValidatorFn {
+  return (control: AbstractControl): ValidationErrors | null => {
+    return !!targetControl &&
+      (targetControl.value as string) === (control.value as string)
+      ? { ucapNotSameWith: true }
+      : null;
+  };
+}
+
+export function ucapSameWith(targetControl: AbstractControl): ValidatorFn {
+  return (control: AbstractControl): ValidationErrors | null => {
+    return !!targetControl && targetControl.value !== control.value
+      ? { ucapSameWith: true }
+      : null;
+  };
+}
+
+export function ucapNotSame(value: string | number): ValidatorFn {
+  return (control: AbstractControl): ValidationErrors | null => {
+    return !!value && value === control.value ? { ucapNotSame: true } : null;
+  };
+}
+
+export function ucapSame(value: string | number): ValidatorFn {
+  return (control: AbstractControl): ValidationErrors | null => {
+    return !!value && value !== control.value ? { ucapSame: true } : null;
+  };
+}
 
 @Component({
   selector: 'ucap-account-change-password',
@@ -20,48 +76,79 @@ import { LoginInfo, KEY_LOGIN_INFO } from '@app/types';
 })
 export class ChangePasswordComponent implements OnInit {
   @Input()
-  changePasswordBtnEnable: boolean;
+  loginId: string;
+
+  @Input()
+  phoneNumber: string;
+
+  @Input()
+  encryptedLoginPw: string;
 
   @Output()
   changePassword = new EventEmitter<{
     currentLoginPw: string;
     newLoginPw: string;
-    newConfirmLoginPw: string;
-    notValid: () => void;
   }>();
 
-  @ViewChild('currentLoginPw', { static: true })
-  currentLoginPwElementRef: ElementRef;
-  @ViewChild('newLoginPw', { static: true })
-  newLoginPwElementRef: ElementRef;
-
   changePasswordForm: FormGroup;
+  currentLoginPwFormControl = new FormControl('');
+  newLoginPwFormControl = new FormControl('');
+  newConfirmLoginPwFormControl = new FormControl('');
+
+  PasswordValidationResult = PasswordValidationResult;
 
   constructor(
     private formBuilder: FormBuilder,
-    private changeDetectorRef: ChangeDetectorRef,
-    private localStorageService: LocalStorageService
+    private changeDetectorRef: ChangeDetectorRef
   ) {}
 
   ngOnInit() {
-    const loginInfo: LoginInfo = this.localStorageService.get<LoginInfo>(
-      KEY_LOGIN_INFO
+    const currentLoginPwValidators: ValidatorFn[] = [Validators.required];
+    if (!!this.encryptedLoginPw) {
+      currentLoginPwValidators.push(ucapPasswordSame(this.encryptedLoginPw));
+    }
+    this.currentLoginPwFormControl.setValidators(currentLoginPwValidators);
+
+    let validateOption: PasswordValidationOption = {};
+    if (!!this.loginId) {
+      validateOption = {
+        ...validateOption,
+        userId: this.loginId
+      };
+    }
+    if (!!this.phoneNumber) {
+      validateOption = {
+        ...validateOption,
+        phoneNumber: this.phoneNumber
+      };
+    }
+
+    const newLoginPwValidators: ValidatorFn[] = [
+      Validators.required,
+      ucapNotSameWith(this.currentLoginPwFormControl),
+      ucapPassword(validateOption)
+    ];
+    this.newLoginPwFormControl.setValidators(newLoginPwValidators);
+
+    const newConfirmLoginPwValidators: ValidatorFn[] = [
+      Validators.required,
+      ucapSameWith(this.newLoginPwFormControl)
+    ];
+    this.newConfirmLoginPwFormControl.setValidators(
+      newConfirmLoginPwValidators
     );
+
     this.changePasswordForm = this.formBuilder.group({
-      currentLoginPw: ['', Validators.required],
-      newLoginPw: ['', Validators.required],
-      newConfirmLoginPw: ['', Validators.required]
+      currentLoginPwFormControl: this.currentLoginPwFormControl,
+      newLoginPwFormControl: this.newLoginPwFormControl,
+      newConfirmLoginPwFormControl: this.newConfirmLoginPwFormControl
     });
   }
 
   onClickChangePassword() {
     this.changePassword.emit({
-      currentLoginPw: this.changePasswordForm.get('currentLoginPw').value,
-      newLoginPw: this.changePasswordForm.get('newLoginPw').value,
-      newConfirmLoginPw: this.changePasswordForm.get('newConfirmLoginPw').value,
-      notValid: () => {
-        this.currentLoginPwElementRef.nativeElement.focus();
-      }
+      currentLoginPw: this.currentLoginPwFormControl.value,
+      newLoginPw: this.newLoginPwFormControl.value
     });
   }
 }