diff --git a/projects/ucap-webmessenger-app/src/app/layouts/messenger/components/left-sidenav/organization.component.html b/projects/ucap-webmessenger-app/src/app/layouts/messenger/components/left-sidenav/organization.component.html
index 44ab06ee..a4146c36 100644
--- a/projects/ucap-webmessenger-app/src/app/layouts/messenger/components/left-sidenav/organization.component.html
+++ b/projects/ucap-webmessenger-app/src/app/layouts/messenger/components/left-sidenav/organization.component.html
@@ -1,37 +1,50 @@
-<div
-  class="oraganization-tab"
-  *ngIf="departmentInfoList$ | async"
->
-  <div class="oraganization-tab-tree" >
+<div>
+  <div class="current-head">
+    <h3>조직도</h3>
+  </div>
+  <ucap-organization-tenant-search
+    [companyList]="companyList$ | async"
+    [companyCode]="companyCode"
+    (keyDownEnter)="onKeyDownEnterOrganizationTenantSearch($event)"
+    (cancel)="onClickCancel($event)"
+  >
+  </ucap-organization-tenant-search>
+</div>
+<div class="oraganization-tab" *ngIf="departmentInfoList$ | async">
+  <div class="oraganization-tab-tree">
     <ucap-organization-tree
       [oraganizationList]="departmentInfoList$ | async"
       [loginRes]="loginRes"
       (selected)="onSelectedOrganization($event)"
     ></ucap-organization-tree>
   </div>
-  <div class="select-list ">
-      <dl class="select-dept text-accent-color">
-        <dt>
+  <div class="select-list">
+    <dl class="select-dept text-accent-color">
+      <dt>
+        <ng-container *ngIf="!isShowSearch">
           {{ getSelectedDepartmentName() }}
-        </dt>
-        <dd>
-          <mat-checkbox
-            #checkbox
-            [checked]="getCheckedAllUser()"
-            (change)="onCheckAllUser(checkbox.checked)"
-            (click)="$event.stopPropagation()"
+        </ng-container>
+        <ng-container *ngIf="isShowSearch">
+          검색결과<span class="text-accent-color"
+            >({{ searchUserInfos.length }}명)</span
           >
-          </mat-checkbox>
-        </dd>
-      </dl>
+        </ng-container>
+      </dt>
+      <dd>
+        <mat-checkbox
+          #checkbox
+          [checked]="getCheckedAllUser()"
+          (change)="onCheckAllUser(checkbox.checked)"
+          (click)="$event.stopPropagation()"
+        >
+        </mat-checkbox>
+      </dd>
+    </dl>
     <div *ngIf="selectedDepartmentProcessing">
       <mat-progress-bar mode="indeterminate"></mat-progress-bar>
     </div>
-    <div class="search-list">
-      <cdk-virtual-scroll-viewport
-        itemSize="20"
-        style="height: 100%;"
-      >
+    <div *ngIf="!isShowSearch" class="search-list">
+      <cdk-virtual-scroll-viewport itemSize="20" style="height: 100%;">
         <ucap-profile-user-list-item
           *cdkVirtualFor="let userInfo of selectedDepartmentUserInfoList"
           [userInfo]="userInfo"
@@ -55,11 +68,25 @@
       >
       </ucap-profile-user-list-item> -->
     </div>
+    <div *ngIf="isShowSearch" class="search-result">
+      <cdk-virtual-scroll-viewport itemSize="20" style="height: 100%;">
+        <ucap-profile-user-list-item
+          *cdkVirtualFor="let userInfo of searchUserInfos"
+          [userInfo]="userInfo"
+          [checkable]="true"
+          [sessionVerinfo]="sessionVerinfo"
+          [selectedUserList]="selectedUserList"
+          [isChecked]="getCheckedUser(userInfo)"
+          (checkUser)="onCheckUser($event)"
+        >
+        </ucap-profile-user-list-item>
+      </cdk-virtual-scroll-viewport>
+    </div>
   </div>
   <div *ngIf="!isUserSelect" class="btn-box">
-    <!--선택된 후에는 disabled="true" 빼주세요. -->
     <button
       mat-stroked-button
+      [disabled]="selectedUserList.length > 0 ? 'false' : 'true'"
       class="mat-primary"
       (click)="onClickShowSelectedUserList()"
     >
@@ -69,18 +96,29 @@
     </button>
     <ul>
       <li>
-        <button mat-flat-button (click)="onClickAddGroup()" class="mat-primary">
+        <button
+          mat-flat-button
+          [disabled]="selectedUserList.length > 0 ? 'false' : 'true'"
+          (click)="onClickAddGroup()"
+          class="mat-primary"
+        >
           그룹에 추가
         </button>
       </li>
       <li>
-        <button mat-flat-button (click)="onClickChatOpen()" class="mat-primary">
+        <button
+          mat-flat-button
+          [disabled]="selectedUserList.length > 0 ? 'false' : 'true'"
+          (click)="onClickChatOpen()"
+          class="mat-primary"
+        >
           대화
         </button>
       </li>
       <li>
         <button
           mat-flat-button
+          [disabled]="selectedUserList.length > 0 ? 'false' : 'true'"
           (click)="onClickConference()"
           class="mat-primary"
         >
diff --git a/projects/ucap-webmessenger-app/src/app/layouts/messenger/components/left-sidenav/organization.component.scss b/projects/ucap-webmessenger-app/src/app/layouts/messenger/components/left-sidenav/organization.component.scss
index dd444aaa..032dc9bf 100644
--- a/projects/ucap-webmessenger-app/src/app/layouts/messenger/components/left-sidenav/organization.component.scss
+++ b/projects/ucap-webmessenger-app/src/app/layouts/messenger/components/left-sidenav/organization.component.scss
@@ -11,98 +11,134 @@
     display: -webkit-box;
     -webkit-line-clamp: $row;
     -webkit-box-orient: vertical;
-     word-wrap: break-word;
+    word-wrap: break-word;
   }
 }
 
+.current-head {
+  display: flex;
+  justify-content: center;
+  padding: 0 10px;
+  height: 70px;
+  background-color: #eeeeee;
+  background: #f15f79;
+  background: -webkit-linear-gradient(to right, #352a37, #f15f79);
+  background: linear-gradient(to right, #352a37, #ef4c73);
+  color: #ffffff;
+  h3 {
+    display: inline-flex;
+    padding-left: 10px;
+    align-items: center;
+    width: 100%;
+  }
+  .btn-box {
+    height: 100%;
+    margin-left: auto;
+    display: inline-flex;
+    align-items: center;
+    svg {
+      stroke: #333333;
+    }
+  }
+}
+.search-result {
+  height: calc(100% - 40px);
+  overflow: auto;
+  .result-num {
+    padding: 10px;
+    display: flex;
+    height: 40px;
+  }
+}
 
 .oraganization-tab {
-  height: 100%;
+  height: calc(100% - 130px);
   flex-direction: inherit;
   display: flex;
   .oraganization-tab-tree {
-    height:40%;
+    height: 40%;
     overflow-y: auto;
   }
 }
 
 //팝업에 있는 조직도
-.mat-card-content{
-  .mat-tab-body-content{
-    .oraganization-box{
+.mat-card-content {
+  .mat-tab-body-content {
+    .oraganization-box {
       .oraganization-tab {
         height: 80%;
         flex-direction: row;
-     }
-    }
-  }
-}
-
-.select-list{
-  height:60%;
-  border-top:1px solid #dddddd;
-  .select-dept{
-    padding:0 20px;
-    height:40px;
-    line-height:40px;
-    display:flex;
-    background-color: #f9f9f9;
-    dt{
-
-    }
-    dd{
-      margin-left:auto;
-    }
-  }
-  .search-list{
-    height: calc(100% - 40px);
-    overflow: auto;
-    .list-item{
-      height:70px;
-    }
-  }
-}
-.btn-box{
-  padding:10px;
-  button{
-    width:100%;
-    @include ellipsis(1);
-  }
-    ul{
-      display:flex;
-      flex-flow: row;
-      align-content: space-between;
-      margin-top:4px;
-      li{
-        display:inline-flex;
-        align-items: center;
-        flex-grow: 1;
-        width:33%;
-        margin-right: 4px;
-        &:last-child{
-          margin-right: 0;
-        }
-        button{
-          text-align:center;
-          width:100%;
-          height:100%;
-          padding: 0 6px;
-        }
       }
     }
   }
+}
 
+.select-list {
+  height: 60%;
+  border-top: 1px solid #dddddd;
+  .select-dept {
+    padding: 0 20px;
+    height: 40px;
+    line-height: 40px;
+    display: flex;
+    background-color: #f9f9f9;
+    dt {
+    }
+    dd {
+      margin-left: auto;
+    }
+  }
+  .search-list {
+    height: calc(100% - 40px);
+    overflow: auto;
+    .list-item {
+      height: 70px;
+    }
+  }
+}
+.btn-box {
+  padding: 10px;
+  button {
+    width: 100%;
+    @include ellipsis(1);
+    span {
+      vertical-align: baseline;
+    }
+  }
+  ul {
+    display: flex;
+    flex-flow: row;
+    align-content: space-between;
+    margin-top: 4px;
+    li {
+      display: inline-flex;
+      align-items: center;
+      flex-grow: 1;
+      width: 33%;
+      margin-right: 4px;
+      &:last-child {
+        margin-right: 0;
+      }
+      button {
+        text-align: center;
+        width: 100%;
+        height: 100%;
+        padding: 0 6px;
+      }
+    }
+  }
+}
 
 .dialog-org {
   .oraganization-tab {
     width: 100%;
-    height:380px;
+    height: 380px;
     border-bottom: 1px solid #dddddd;
     position: relative;
     .oraganization-tab-tree {
       display: inline-flex;
       width: 50%;
-      height:100%;
+      height: 100%;
       border-right: 1px solid #dddddd;
       overflow: auto;
     }
@@ -110,11 +146,11 @@
       display: inline-flex;
       flex-direction: column;
       width: 50%;
-      height:100%;
+      height: 100%;
       overflow: auto;
       .search-list {
         overflow: auto;
       }
     }
   }
-}
\ No newline at end of file
+}
diff --git a/projects/ucap-webmessenger-app/src/app/layouts/messenger/components/left-sidenav/organization.component.ts b/projects/ucap-webmessenger-app/src/app/layouts/messenger/components/left-sidenav/organization.component.ts
index e11ac45e..b19fd827 100644
--- a/projects/ucap-webmessenger-app/src/app/layouts/messenger/components/left-sidenav/organization.component.ts
+++ b/projects/ucap-webmessenger-app/src/app/layouts/messenger/components/left-sidenav/organization.component.ts
@@ -4,10 +4,10 @@ import {
   OnDestroy,
   Output,
   EventEmitter,
-  Input
+  Input,
 } from '@angular/core';
 import { ucapAnimations, DialogService } from '@ucap-webmessenger/ui';
-import { Observable, Subscription } from 'rxjs';
+import { Observable, Subscription, of } from 'rxjs';
 import {
   DeptInfo,
   QueryProtocolService,
@@ -15,7 +15,10 @@ import {
   UserInfoSS,
   DeptUserResponse,
   UserInfoF,
-  UserInfoDN
+  UserInfoDN,
+  SSVC_TYPE_QUERY_DEPT_USER_DATA,
+  SSVC_TYPE_QUERY_DEPT_USER_RES,
+  DeptUserData,
 } from '@ucap-webmessenger/protocol-query';
 import { UserInfo, GroupDetailData } from '@ucap-webmessenger/protocol-sync';
 import { Store, select } from '@ngrx/store';
@@ -25,23 +28,25 @@ import * as AppStore from '@app/store';
 import * as QueryStore from '@app/store/messenger/query';
 import * as SyncStore from '@app/store/messenger/sync';
 import * as ChatStore from '@app/store/messenger/chat';
+import * as StatusStore from '@app/store/messenger/status';
 import { SessionStorageService } from '@ucap-webmessenger/web-storage';
 import { LoginInfo, KEY_LOGIN_INFO } from '@app/types';
-import { take, map, tap, delay } from 'rxjs/operators';
+import { take, map, tap, delay, catchError } from 'rxjs/operators';
 import { VersionInfo2Response } from '@ucap-webmessenger/api-public';
 import { KEY_VER_INFO } from '@app/types/ver-info.type';
 import {
   SelectGroupDialogComponent,
   SelectGroupDialogData,
-  SelectGroupDialogResult
+  SelectGroupDialogResult,
 } from '../../dialogs/group/select-group.dialog.component';
 import { LoginResponse } from '@ucap-webmessenger/protocol-authentication';
+import { Company } from '@ucap-webmessenger/api-external';
 
 @Component({
   selector: 'app-layout-chat-left-sidenav-organization',
   templateUrl: './organization.component.html',
   styleUrls: ['./organization.component.scss'],
-  animations: ucapAnimations
+  animations: ucapAnimations,
 })
 export class OrganizationComponent implements OnInit, OnDestroy {
   @Input()
@@ -62,6 +67,9 @@ export class OrganizationComponent implements OnInit, OnDestroy {
     userInfos: (UserInfo | UserInfoSS | UserInfoF | UserInfoDN)[];
   }>();
 
+  companyList$: Observable<Company[]>;
+  companyCode: string;
+
   departmentInfoList$: Observable<DeptInfo[]>;
   selectedDepartmentUserInfoList$: Observable<UserInfoSS[]>;
   selectedDepartmentUserInfoList: UserInfoSS[] = [];
@@ -75,9 +83,13 @@ export class OrganizationComponent implements OnInit, OnDestroy {
   loginRes: LoginResponse;
   sessionVerinfo: VersionInfo2Response;
 
+  isShowSearch = false;
+  searchUserInfos: UserInfoSS[] = [];
+
   constructor(
     private store: Store<any>,
     private sessionStorageService: SessionStorageService,
+    private queryProtocolService: QueryProtocolService,
     private dialogService: DialogService,
     private logger: NGXLogger
   ) {
@@ -88,6 +100,11 @@ export class OrganizationComponent implements OnInit, OnDestroy {
   }
 
   ngOnInit() {
+    this.companyCode = this.loginInfo.companyCode;
+    this.companyList$ = this.store.pipe(
+      select(AppStore.SettingSelector.CompanySelector.companyList)
+    );
+
     this.departmentInfoList$ = this.store.pipe(
       select(AppStore.MessengerSelector.QuerySelector.departmentInfoList)
     );
@@ -133,7 +150,7 @@ export class OrganizationComponent implements OnInit, OnDestroy {
               search: '',
               searchRange: DeptSearchType.All,
               senderCompanyCode: this.loginInfo.companyCode,
-              senderEmployeeType: loginRes.userInfo.employeeType
+              senderEmployeeType: loginRes.userInfo.employeeType,
             })
           );
           return loginRes;
@@ -155,7 +172,67 @@ export class OrganizationComponent implements OnInit, OnDestroy {
     }
   }
 
+  /** 유저검색 */
+  onKeyDownEnterOrganizationTenantSearch(params: {
+    companyCode: string;
+    searchWord: string;
+  }) {
+    if (params.searchWord.trim().length > 1) {
+      this.isShowSearch = true;
+      this.selectedDepartmentProcessing = true;
+      const searchUserInfos: UserInfoSS[] = [];
+      this.queryProtocolService
+        .deptUser({
+          divCd: 'GRP',
+          companyCode: params.companyCode,
+          searchRange: DeptSearchType.All,
+          search: params.searchWord,
+          senderCompanyCode: params.companyCode,
+          senderEmployeeType: this.loginRes.userInfo.employeeType,
+        })
+        .pipe(
+          map(res => {
+            switch (res.SSVC_TYPE) {
+              case SSVC_TYPE_QUERY_DEPT_USER_DATA:
+                searchUserInfos.push(...(res as DeptUserData).userInfos);
+                break;
+              case SSVC_TYPE_QUERY_DEPT_USER_RES:
+                {
+                  // 검색 결과 처리.
+                  this.searchUserInfos = searchUserInfos;
+                  this.selectedDepartmentProcessing = false;
+                  // 검색 결과에 따른 프레즌스 조회.
+                  const userSeqList: number[] = [];
+                  this.searchUserInfos.map(user => userSeqList.push(user.seq));
+                  if (userSeqList.length > 0) {
+                    this.store.dispatch(
+                      StatusStore.bulkInfo({
+                        divCd: 'orgSrch',
+                        userSeqs: userSeqList,
+                      })
+                    );
+                  }
+                }
+                break;
+            }
+          }),
+          catchError(error => {
+            this.selectedDepartmentProcessing = false;
+            return of(this.logger.error(error));
+          })
+        )
+        .subscribe();
+    }
+  }
+  /** 검색 취소 */
+  onClickCancel() {
+    this.isShowSearch = false;
+    this.searchUserInfos = [];
+  }
+
   onSelectedOrganization(deptInfo: DeptInfo) {
+    this.onClickCancel();
+
     this.store
       .pipe(
         take(1),
@@ -169,7 +246,7 @@ export class OrganizationComponent implements OnInit, OnDestroy {
               search: '',
               searchRange: DeptSearchType.All,
               senderCompanyCode: this.loginInfo.companyCode,
-              senderEmployeeType: loginRes.userInfo.employeeType
+              senderEmployeeType: loginRes.userInfo.employeeType,
             })
           );
         }),
@@ -182,7 +259,7 @@ export class OrganizationComponent implements OnInit, OnDestroy {
 
   getSelectedDepartmentName() {
     if (!!this.selectedDepartmentProcessing) {
-      return '부서조회중..';
+      return '조회중..';
     }
 
     if (!!this.selectedDepartmentName) {
@@ -194,10 +271,14 @@ export class OrganizationComponent implements OnInit, OnDestroy {
 
   /** 전체 체크여부 */
   getCheckedAllUser() {
+    const compareList: UserInfoSS[] = this.isShowSearch
+      ? this.searchUserInfos
+      : this.selectedDepartmentUserInfoList;
+
     if (
-      !this.selectedDepartmentUserInfoList ||
-      this.selectedDepartmentUserInfoList.length === 0 ||
-      this.selectedDepartmentUserInfoList.filter(
+      !compareList ||
+      compareList.length === 0 ||
+      compareList.filter(
         item =>
           !(
             this.selectedUserList.filter(user => user.seq === item.seq).length >
@@ -225,7 +306,9 @@ export class OrganizationComponent implements OnInit, OnDestroy {
   onCheckAllUser(value: boolean) {
     this.checkAllUser.emit({
       isChecked: value,
-      userInfos: this.selectedDepartmentUserInfoList
+      userInfos: this.isShowSearch
+        ? this.searchUserInfos
+        : this.selectedDepartmentUserInfoList,
     });
   }
 
@@ -251,8 +334,8 @@ export class OrganizationComponent implements OnInit, OnDestroy {
     >(SelectGroupDialogComponent, {
       width: '600px',
       data: {
-        title: 'Group Select'
-      }
+        title: 'Group Select',
+      },
     });
 
     if (!!result && !!result.choice && result.choice) {
@@ -269,7 +352,7 @@ export class OrganizationComponent implements OnInit, OnDestroy {
         this.store.dispatch(
           SyncStore.updateGroupMember({
             oldGroup,
-            trgtUserSeq
+            trgtUserSeq,
           })
         );