diff --git a/projects/ucap-webmessenger-app/src/app/layouts/messenger/components/messages.component.ts b/projects/ucap-webmessenger-app/src/app/layouts/messenger/components/messages.component.ts
index 6bdf2bc4..2ce56571 100644
--- a/projects/ucap-webmessenger-app/src/app/layouts/messenger/components/messages.component.ts
+++ b/projects/ucap-webmessenger-app/src/app/layouts/messenger/components/messages.component.ts
@@ -60,10 +60,7 @@ import {
 } from '@app/types';
 import { RoomInfo, UserInfo, RoomType } from '@ucap-webmessenger/protocol-room';
 import { tap, take, map, catchError, finalize } from 'rxjs/operators';
-import {
-  FileInfo,
-  FormComponent as UCapUiChatFormComponent
-} from '@ucap-webmessenger/ui-chat';
+import { FormComponent as UCapUiChatFormComponent } from '@ucap-webmessenger/ui-chat';
 import { KEY_VER_INFO } from '@app/types';
 import { VersionInfo2Response } from '@ucap-webmessenger/api-public';
 import {
@@ -148,6 +145,8 @@ export class MessagesComponent implements OnInit, OnDestroy, AfterViewInit {
   userInfoList: UserInfo[];
   userInfoListSubscription: Subscription;
   eventListProcessing$: Observable<boolean>;
+  searchEventListProcessing: boolean;
+  searchEventListProcessingSubscription: Subscription;
   eventInfoStatus: InfoResponse;
   eventInfoStatusSubscription: Subscription;
   sessionVerInfo: VersionInfo2Response;
@@ -166,7 +165,7 @@ export class MessagesComponent implements OnInit, OnDestroy, AfterViewInit {
   interval: any;
 
   /** About Searching */
-  isShowSearchArea = true;
+  isShowSearchArea = false;
   moreSearchProcessing = false;
   searchText = '';
   searchedList: Info<EventJson>[];
@@ -258,6 +257,25 @@ export class MessagesComponent implements OnInit, OnDestroy, AfterViewInit {
       select(AppStore.MessengerSelector.EventSelector.infoListProcessing)
     );
 
+    this.searchEventListProcessingSubscription = this.store
+      .pipe(
+        select(
+          AppStore.MessengerSelector.EventSelector.infoSearchListProcessing
+        ),
+        tap(process => {
+          this.searchEventListProcessing = process;
+          if (!process && this.isShowSearchArea) {
+            this.doSearchTextInEvent(this.searchText);
+            this.snackBarService.open('대화검색을 마쳤습니다.', '확인', {
+              duration: 3000,
+              verticalPosition: 'top',
+              horizontalPosition: 'center'
+            });
+          }
+        })
+      )
+      .subscribe();
+
     this.eventRemain$ = this.store.pipe(
       select(AppStore.MessengerSelector.EventSelector.remainInfo),
       tap(remainInfo => {
@@ -298,9 +316,9 @@ export class MessagesComponent implements OnInit, OnDestroy, AfterViewInit {
 
           if (this.moreSearchProcessing) {
             const baseseq = this.baseEventSeq;
-            setTimeout(() => {
-              this.onSearchChat(this.searchText, baseseq);
-            }, 800);
+            // setTimeout(() => {
+            //   this.doSearchTextInEvent(this.searchText, baseseq);
+            // }, 800);
             this.baseEventSeq = infoList[0].seq;
           } else {
             if (!!infoList && infoList.length > 0) {
@@ -365,6 +383,9 @@ export class MessagesComponent implements OnInit, OnDestroy, AfterViewInit {
     if (!!this.eventInfoStatusSubscription) {
       this.eventInfoStatusSubscription.unsubscribe();
     }
+    if (!!this.searchEventListProcessingSubscription) {
+      this.searchEventListProcessingSubscription.unsubscribe();
+    }
 
     clearInterval(this.interval);
   }
@@ -1487,6 +1508,19 @@ export class MessagesComponent implements OnInit, OnDestroy, AfterViewInit {
   onSearchChat(searchText: string, baseSeq?: number) {
     this.searchText = searchText;
 
+    // CASE :: searching text after retrieve All event Infos.
+    this.store.dispatch(
+      EventStore.infoAll({
+        roomSeq: this.roomInfo.roomSeq,
+        baseSeq: this.eventList[0].seq,
+        requestCount:
+          environment.productConfig.CommonSetting.eventRequestDefaultCount * 2
+      })
+    );
+
+    // this.doSearchTextInEvent(searchText);
+  }
+  doSearchTextInEvent(searchText: string, baseSeq?: number): void {
     this.searchedList = this.eventList.filter(event => {
       let contents = '';
       if (event.type === EventType.Character) {
@@ -1568,6 +1602,7 @@ export class MessagesComponent implements OnInit, OnDestroy, AfterViewInit {
       this.moreSearchProcessing = true;
       this.eventMorePosition = this.psChatContent.directiveRef.elementRef.nativeElement.scrollHeight;
 
+      // Case :: retrieve event infos step by step until include searchtext in event..
       this.store.dispatch(
         EventStore.infoForSearch({
           req: {
diff --git a/projects/ucap-webmessenger-app/src/app/store/messenger/event/actions.ts b/projects/ucap-webmessenger-app/src/app/store/messenger/event/actions.ts
index e31c8a5c..437b3bcf 100644
--- a/projects/ucap-webmessenger-app/src/app/store/messenger/event/actions.ts
+++ b/projects/ucap-webmessenger-app/src/app/store/messenger/event/actions.ts
@@ -48,6 +48,11 @@ export const infoForSearchEnd = createAction(
   props()
 );
 
+export const infoAll = createAction(
+  '[Messenger::Event] Info All',
+  props<InfoRequest>()
+);
+
 export const fileInfo = createAction(
   '[Messenger::Event] File Info',
   props<{ req: FileInfoRequest }>()
diff --git a/projects/ucap-webmessenger-app/src/app/store/messenger/event/effects.ts b/projects/ucap-webmessenger-app/src/app/store/messenger/event/effects.ts
index ce89f127..3026374e 100644
--- a/projects/ucap-webmessenger-app/src/app/store/messenger/event/effects.ts
+++ b/projects/ucap-webmessenger-app/src/app/store/messenger/event/effects.ts
@@ -82,7 +82,8 @@ import {
   fileInfoFailure,
   roomOpenAfterForward,
   infoForSearch,
-  infoForSearchEnd
+  infoForSearchEnd,
+  infoAll
 } from './actions';
 import { SessionStorageService } from '@ucap-webmessenger/web-storage';
 import {
@@ -388,6 +389,71 @@ export class Effects {
     { dispatch: false }
   );
 
+  infoAll$ = createEffect(
+    () => {
+      let infoList: Info<EventJson>[];
+
+      return this.actions$.pipe(
+        ofType(infoAll),
+        tap(() => {
+          infoList = [];
+        }),
+        withLatestFrom(
+          this.store.pipe(
+            select(
+              (state: any) =>
+                state.messenger.event.infoSearchListProcessing as boolean
+            )
+          )
+        ),
+        switchMap(([req, processing]) => {
+          return this.eventProtocolService.info(req).pipe(
+            map(async res => {
+              switch (res.SSVC_TYPE) {
+                case SSVC_TYPE_EVENT_INFO_DATA:
+                  infoList.push(...(res as InfoData).infoList);
+                  break;
+                case SSVC_TYPE_EVENT_INFO_RES:
+                  {
+                    this.store.dispatch(
+                      infoMoreSuccess({
+                        infoList,
+                        res: res as InfoResponse,
+                        remainInfo:
+                          infoList.length === req.requestCount ? true : false
+                      })
+                    );
+
+                    if (infoList.length > 0) {
+                      if (infoList.length === req.requestCount && processing) {
+                        // 재귀
+                        this.store.dispatch(
+                          infoAll({
+                            roomSeq: req.roomSeq,
+                            baseSeq: infoList[0].seq,
+                            requestCount: req.requestCount
+                          })
+                        );
+                      } else {
+                        if (infoList.length < req.requestCount) {
+                          this.store.dispatch(infoForSearchEnd({}));
+                        }
+                      }
+                    } else {
+                      this.store.dispatch(infoForSearchEnd({}));
+                    }
+                  }
+                  break;
+              }
+            }),
+            catchError(error => of(infoFailure({ error })))
+          );
+        })
+      );
+    },
+    { dispatch: false }
+  );
+
   fileInfo$ = createEffect(
     () => {
       let fileInfoList: FileInfo[];
diff --git a/projects/ucap-webmessenger-app/src/app/store/messenger/event/reducers.ts b/projects/ucap-webmessenger-app/src/app/store/messenger/event/reducers.ts
index 03de3a0f..893992de 100644
--- a/projects/ucap-webmessenger-app/src/app/store/messenger/event/reducers.ts
+++ b/projects/ucap-webmessenger-app/src/app/store/messenger/event/reducers.ts
@@ -15,7 +15,8 @@ import {
   infoMoreSuccess,
   fileInfoSuccess,
   infoForSearch,
-  infoForSearchEnd
+  infoForSearchEnd,
+  infoAll
 } from './actions';
 import * as AuthenticationStore from '@app/store/account/authentication';
 import * as ChatStore from '@app/store/messenger/chat';
@@ -42,6 +43,13 @@ export const reducer = createReducer(
       infoSearchListProcessing: false
     };
   }),
+  on(infoAll, (state, action) => {
+    return {
+      ...state,
+      infoListProcessing: true,
+      infoSearchListProcessing: true
+    };
+  }),
 
   on(infoSuccess, (state, action) => {
     return {