diff --git a/projects/ucap-webmessenger-app/src/app/layouts/messenger/components/messages.component.html b/projects/ucap-webmessenger-app/src/app/layouts/messenger/components/messages.component.html
index b04ad574..55021b72 100644
--- a/projects/ucap-webmessenger-app/src/app/layouts/messenger/components/messages.component.html
+++ b/projects/ucap-webmessenger-app/src/app/layouts/messenger/components/messages.component.html
@@ -81,6 +81,9 @@
           <button mat-menu-item (click)="onClickContextMenu('ADD_MEMBER')">
             대화상대추가
           </button>
+          <button mat-menu-item (click)="onClickContextMenu('ADD_GROUP')">
+            그룹멤버로추가
+          </button>
           <button mat-menu-item (click)="onClickContextMenu('EDIT_ROOM')">
             대화방설정
           </button>
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 9c3e903a..6bcfd2b7 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
@@ -40,6 +40,7 @@ import * as AppStore from '@app/store';
 import * as EventStore from '@app/store/messenger/event';
 import * as ChatStore from '@app/store/messenger/chat';
 import * as RoomStore from '@app/store/messenger/room';
+import * as SyncStore from '@app/store/messenger/sync';
 import { LoginResponse } from '@ucap-webmessenger/protocol-authentication';
 import { SessionStorageService } from '@ucap-webmessenger/web-storage';
 import {
@@ -84,6 +85,8 @@ import {
   EditChatRoomDialogResult,
   EditChatRoomDialogData
 } from '../dialogs/chat/edit-chat-room.dialog.component';
+import { SelectGroupDialogComponent, SelectGroupDialogResult, SelectGroupDialogData } from '../dialogs/group/select-group.dialog.component';
+import { GroupDetailData } from '@ucap-webmessenger/protocol-sync';
 
 @Component({
   selector: 'app-layout-messenger-messages',
@@ -838,6 +841,40 @@ export class MessagesComponent implements OnInit, OnDestroy, AfterViewInit {
           }
         }
         break;
+      case 'ADD_GROUP':
+        {
+          const result = await this.dialogService.open<
+            SelectGroupDialogComponent,
+            SelectGroupDialogData,
+            SelectGroupDialogResult
+          >(SelectGroupDialogComponent, {
+            width: '600px',
+            data: {
+              title: 'Group Select'
+            }
+          });
+
+          if (!!result && !!result.choice && result.choice) {
+            if (!!result.group) {
+              const oldGroup: GroupDetailData = result.group;
+              const trgtUserSeq: number[] = [];
+              result.group.userSeqs.map(seq => trgtUserSeq.push(seq));
+              this.userInfoList
+                .filter(v => result.group.userSeqs.indexOf(v.seq) < 0)
+                .forEach(user => {
+                  trgtUserSeq.push(user.seq);
+                });
+
+              this.store.dispatch(
+                SyncStore.updateGroupMember({
+                  oldGroup,
+                  trgtUserSeq
+                })
+              );
+            }
+          }
+        }
+        break;
       case 'EDIT_ROOM':
         {
           const result = await this.dialogService.open<