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 ae643136..331fc941 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
@@ -6,7 +6,8 @@ import {
   EventEmitter,
   Input,
   ViewChild,
-  AfterViewChecked
+  AfterViewChecked,
+  ChangeDetectorRef
 } from '@angular/core';
 import { ucapAnimations, DialogService } from '@ucap-webmessenger/ui';
 import { Observable, Subscription, of } from 'rxjs';
@@ -158,6 +159,7 @@ export class OrganizationComponent
     private queryProtocolService: QueryProtocolService,
     private dialogService: DialogService,
     private translateService: TranslateService,
+    private changeDetectorRef: ChangeDetectorRef,
     private logger: NGXLogger
   ) {
     this.loginInfo = this.sessionStorageService.get<LoginInfo>(KEY_LOGIN_INFO);
@@ -374,13 +376,15 @@ export class OrganizationComponent
     if (
       !compareList ||
       compareList.length === 0 ||
-      compareList.filter(
-        item =>
-          !(
-            this.selectedUserList.filter(user => user.seq === item.seq).length >
-            0
-          )
-      ).length > 0
+      compareList
+        .filter(item => item.seq !== this.loginRes.userSeq)
+        .filter(
+          item =>
+            !(
+              this.selectedUserList.filter(user => user.seq === item.seq)
+                .length > 0
+            )
+        ).length > 0
     ) {
       return false;
     } else {
@@ -418,6 +422,8 @@ export class OrganizationComponent
         : this.selectedDepartmentUserInfoList
       ).filter(user => user.seq !== this.loginRes.userSeq)
     });
+
+    this.changeDetectorRef.detectChanges();
   }
 
   /** 리스트가 checkable 할 경우 checkbox 의 change 이벤트를 상위 컴포넌트로 전달한다. */
@@ -507,10 +513,22 @@ export class OrganizationComponent
       const seq: number[] = [];
       this.selectedUserList.map(user => seq.push(user.seq));
       this.store.dispatch(ChatStore.openRoom({ userSeqList: seq }));
+
+      // 상위 컴포넌트의 selectedUserList clear.
+      this.checkAllUser.emit({
+        isChecked: false,
+        userInfos: this.selectedUserList
+      });
     }
   }
   onClickConference() {
     this.logger.debug('onClickConference', this.selectedUserList);
+
+    // 상위 컴포넌트의 selectedUserList clear.
+    this.checkAllUser.emit({
+      isChecked: false,
+      userInfos: this.selectedUserList
+    });
   }
 
   onContextMenuOrgUser(