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 402f0f50..5a7f1b87 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
@@ -102,6 +102,9 @@ export class MessagesComponent implements OnInit, OnDestroy, AfterViewChecked {
   files: File[];
   fileItems: DataTransferItemList;
 
+  /** Timer 대화방의 대화 삭제를 위한 interval */
+  interval: any;
+
   constructor(
     private store: Store<any>,
     private sessionStorageService: SessionStorageService,
@@ -173,6 +176,12 @@ export class MessagesComponent implements OnInit, OnDestroy, AfterViewChecked {
     );
 
     this.psChatContent.directiveRef.scrollToBottom(0, 0);
+
+    this.interval = setInterval(() => {
+      if (!!this.roomInfo.isTimeRoom) {
+        this.store.dispatch(EventStore.infoIntervalClear({}));
+      }
+    }, 1000);
   }
 
   ngOnDestroy(): void {
@@ -185,6 +194,8 @@ export class MessagesComponent implements OnInit, OnDestroy, AfterViewChecked {
     if (!!this.userInfoListSubscription) {
       this.userInfoListSubscription.unsubscribe();
     }
+
+    clearInterval(this.interval);
   }
 
   ngAfterViewChecked(): void {
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 a06301c8..4ffe65af 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
@@ -37,6 +37,11 @@ export const infoMoreSuccess = createAction(
   }>()
 );
 
+export const infoIntervalClear = createAction(
+  '[Messenger::Event] Info Interval Clear',
+  props()
+);
+
 export const infoFailure = createAction(
   '[Messenger::Event] Info Failure',
   props<{ error: any }>()
@@ -182,6 +187,6 @@ export const delNotification = createAction(
 export const delInfoList = createAction(
   '[Messenger::Event] Delete InfoList',
   props<{
-    eventSeq: number;
+    eventSeqs: number[];
   }>()
 );
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 e82da5aa..db1efa13 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
@@ -68,7 +68,8 @@ import {
   forwardAfterRoomOpen,
   sendMass,
   sendMassFailure,
-  infoMoreSuccess
+  infoMoreSuccess,
+  infoIntervalClear
 } from './actions';
 import { SessionStorageService } from '@ucap-webmessenger/web-storage';
 import {
@@ -158,6 +159,45 @@ export class Effects {
     { dispatch: false }
   );
 
+  infoIntervalClear$ = createEffect(
+    () => {
+      return this.actions$.pipe(
+        ofType(infoIntervalClear),
+        withLatestFrom(
+          this.store.pipe(
+            select((state: any) => state.messenger.room.roomInfo as RoomInfo)
+          ),
+          this.store.pipe(
+            select(
+              (state: any) =>
+                state.messenger.event.infoList.entities as Dictionary<Info>
+            )
+          )
+        ),
+        map(([action, roomInfo, eventList]) => {
+          if (roomInfo.isTimeRoom && roomInfo.timeRoomInterval > 0) {
+            const delEventSeq: number[] = [];
+            // tslint:disable-next-line: forin
+            for (const key in eventList) {
+              const event: Info = eventList[key];
+              if (
+                new Date().getTime() - new Date(event.sendDate).getTime() >=
+                roomInfo.timeRoomInterval * 1000
+              ) {
+                delEventSeq.push(event.seq);
+              }
+            }
+
+            if (delEventSeq.length > 0) {
+              this.store.dispatch(delInfoList({ eventSeqs: delEventSeq }));
+            }
+          }
+        })
+      );
+    },
+    { dispatch: false }
+  );
+
   read$ = createEffect(() =>
     this.actions$.pipe(
       ofType(read),
@@ -533,7 +573,7 @@ export class Effects {
         tap(([noti, roomInfo]) => {
           // 현재 방이 오픈되어 있으면 방내용 갱신
           if (!!roomInfo && roomInfo.roomSeq === noti.roomSeq) {
-            this.store.dispatch(delInfoList({ eventSeq: noti.eventSeq }));
+            this.store.dispatch(delInfoList({ eventSeqs: [noti.eventSeq] }));
           }
 
           // 대화 > 리스트의 항목 갱신
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 ee6c3be2..a357c4b4 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
@@ -97,11 +97,11 @@ export const reducer = createReducer(
   }),
 
   on(delInfoList, (state, action) => {
-    const eventSeq = action.eventSeq;
-
     return {
       ...state,
-      infoList: adapterInfoList.removeOne(eventSeq, { ...state.infoList })
+      infoList: adapterInfoList.removeMany(action.eventSeqs, {
+        ...state.infoList
+      })
     };
   }),