diff --git a/frontend/src/components/file-view/comment-panel.js b/frontend/src/components/file-view/comment-panel.js
index f0192f3833..9bf0aec521 100644
--- a/frontend/src/components/file-view/comment-panel.js
+++ b/frontend/src/components/file-view/comment-panel.js
@@ -32,6 +32,12 @@ class CommentPanel extends React.Component {
     this.toBeAddedParticipant = [];
   }
 
+  forceUpdate = () => {
+    this.listComments();
+    this.getParticipants();
+    this.listRepoRelatedUsers();
+  };
+
   listComments = () => {
     seafileAPI.listComments(repoID, fileUuid).then((res) => {
       this.setState({
diff --git a/frontend/src/components/file-view/file-toolbar.js b/frontend/src/components/file-view/file-toolbar.js
index 905a6cb3a5..1de5476f38 100644
--- a/frontend/src/components/file-view/file-toolbar.js
+++ b/frontend/src/components/file-view/file-toolbar.js
@@ -22,7 +22,8 @@ const propTypes = {
   toggleCommentPanel: PropTypes.func.isRequired,
   toggleDetailsPanel: PropTypes.func.isRequired,
   setImageScale: PropTypes.func,
-  rotateImage: PropTypes.func
+  rotateImage: PropTypes.func,
+  isCommentUpdated: PropTypes.bool,
 };
 
 const {
@@ -103,7 +104,7 @@ class FileToolbar extends React.Component {
 
     const { moreDropdownOpen } = this.state;
 
-    const { isLocked, lockedByMe } = this.props;
+    const { isLocked, lockedByMe, isCommentUpdated } = this.props;
     let showLockUnlockBtn = false;
     let lockUnlockText; let lockUnlockIcon;
     if (canLockUnlockFile) {
@@ -214,6 +215,7 @@ class FileToolbar extends React.Component {
             aria-label={gettext('Comment')}
           >
             <i className="sdocfont sdoc-comments"></i>
+            {isCommentUpdated && <span className='comment-tip'></span>}
           </div>
           {showShareBtn && (
             <IconButton
diff --git a/frontend/src/components/file-view/file-view.js b/frontend/src/components/file-view/file-view.js
index fd2db193ff..55089f91e0 100644
--- a/frontend/src/components/file-view/file-view.js
+++ b/frontend/src/components/file-view/file-view.js
@@ -15,6 +15,7 @@ import OnlyofficeFileToolbar from './onlyoffice-file-toolbar';
 import EmbeddedFileDetails from '../dirent-detail/embedded-file-details';
 import { MetadataMiddlewareProvider, MetadataStatusProvider } from '../../hooks';
 import Loading from '../loading';
+import WebSocketClient from '../../utils/websocket-service';
 
 import '../../css/file-view.css';
 
@@ -29,7 +30,7 @@ const propTypes = {
 };
 
 const { isStarred, isLocked, lockedByMe,
-  repoID, filePath, filePerm, enableWatermark, userNickName,
+  repoID, fileUuid, filePath, filePerm, enableWatermark, userNickName,
   fileName, repoEncrypted, isRepoAdmin, fileType
 } = window.app.pageOptions;
 
@@ -44,8 +45,11 @@ class FileView extends React.Component {
       lockedByMe: lockedByMe,
       isCommentPanelOpen: false,
       isHeaderShown: (storedIsHeaderShown === null) || (storedIsHeaderShown == 'true'),
-      isDetailsPanelOpen: false
+      isDetailsPanelOpen: false,
+      isCommentUpdated: false,
     };
+
+    this.socketManager = new WebSocketClient(this.onMessageCallback, repoID);
   }
 
   componentDidMount() {
@@ -53,10 +57,25 @@ class FileView extends React.Component {
     document.getElementById('favicon').href = fileIcon;
   }
 
+  onMessageCallback = (data) => {
+    const { type, content } = data;
+    if (type === 'comment-update') {
+      const { repo_id, file_uuid } = content;
+      if (repoID === repo_id && file_uuid === fileUuid) {
+        if (!this.state.isCommentPanelOpen) {
+          this.setState({ isCommentUpdated: true });
+        } else {
+          this.commentPanelRef.forceUpdate();
+        }
+      }
+    }
+  };
+
   toggleCommentPanel = () => {
     this.setState({
       isCommentPanelOpen: !this.state.isCommentPanelOpen,
       isDetailsPanelOpen: false,
+      isCommentUpdated: false,
     });
   };
 
@@ -121,6 +140,10 @@ class FileView extends React.Component {
     });
   };
 
+  setCommentPanelRef = (ref) => {
+    this.commentPanelRef = ref;
+  };
+
   render() {
     const { isOnlyofficeFile = false } = this.props;
     const { isDetailsPanelOpen, isHeaderShown } = this.state;
@@ -142,6 +165,7 @@ class FileView extends React.Component {
               />
               {isOnlyofficeFile ?
                 <OnlyofficeFileToolbar
+                  isCommentUpdated={this.state.isCommentUpdated}
                   toggleDetailsPanel={this.toggleDetailsPanel}
                   toggleHeader={this.toggleHeader}
                   toggleCommentPanel={this.toggleCommentPanel}
@@ -149,6 +173,7 @@ class FileView extends React.Component {
                 <FileToolbar
                   isLocked={this.state.isLocked}
                   lockedByMe={this.state.lockedByMe}
+                  isCommentUpdated={this.state.isCommentUpdated}
                   onSave={this.props.onSave}
                   isSaving={this.props.isSaving}
                   needSave={this.props.needSave}
@@ -175,6 +200,7 @@ class FileView extends React.Component {
               {this.props.content}
               {this.state.isCommentPanelOpen &&
                 <CommentPanel
+                  ref={this.setCommentPanelRef}
                   toggleCommentPanel={this.toggleCommentPanel}
                   participants={this.props.participants}
                   onParticipantsChange={this.props.onParticipantsChange}
diff --git a/frontend/src/components/file-view/onlyoffice-file-toolbar.js b/frontend/src/components/file-view/onlyoffice-file-toolbar.js
index 4764671a78..4a898fe26f 100644
--- a/frontend/src/components/file-view/onlyoffice-file-toolbar.js
+++ b/frontend/src/components/file-view/onlyoffice-file-toolbar.js
@@ -7,8 +7,9 @@ import Icon from '../../components/icon';
 import IconButton from '../icon-button';
 
 const propTypes = {
+  isCommentUpdated: PropTypes.bool,
   toggleDetailsPanel: PropTypes.func.isRequired,
-  toggleHeader: PropTypes.func.isRequired
+  toggleHeader: PropTypes.func.isRequired,
 };
 
 const {
@@ -38,6 +39,7 @@ class OnlyofficeFileToolbar extends React.Component {
   };
 
   render() {
+    const { isCommentUpdated } = this.props;
     const { moreDropdownOpen } = this.state;
     return (
       <Fragment>
@@ -54,6 +56,7 @@ class OnlyofficeFileToolbar extends React.Component {
             aria-label={gettext('Comment')}
           >
             <i className="sdocfont sdoc-comments"></i>
+            {isCommentUpdated && <span className='comment-tip'></span>}
           </div>
           <Dropdown isOpen={moreDropdownOpen} toggle={this.toggleMoreOpMenu}>
             <DropdownToggle
diff --git a/frontend/src/css/file-view.css b/frontend/src/css/file-view.css
index e274f8cb5a..5c02641dbf 100644
--- a/frontend/src/css/file-view.css
+++ b/frontend/src/css/file-view.css
@@ -20,7 +20,7 @@ body {
 
 .onlyoffice-file-view-header-hidden {
   transition: all .3s ease-in-out;
-  display: none!important;
+  display: none !important;
 }
 
 #unfold-onlyoffice-file-view-header {
@@ -32,17 +32,18 @@ body {
   display: flex;
   justify-content: center;
   align-items: center;
-  background: rgba(255,255,255, 0.6);
+  background: rgba(255, 255, 255, 0.6);
   border-radius: 0 0 14px 14px;
-  box-shadow: 0 0 8px rgba(0,0,0, 0.4);
+  box-shadow: 0 0 8px rgba(0, 0, 0, 0.4);
   cursor: pointer;
 }
 
 #unfold-onlyoffice-file-view-header:hover {
-  background: rgba(255,255,255, 1);
+  background: rgba(255, 255, 255, 1);
 }
 
 .file-view-header .file-toolbar-btn {
+  position: relative;
   width: 28px;
   height: 28px;
   margin-left: 10px;
@@ -78,6 +79,17 @@ body {
   color: #ED7109;
 }
 
+.file-view-header .file-toolbar-btn .comment-tip {
+  position: absolute;
+  left: 4px;
+  top: 4px;
+  border-radius: 50%;
+  width: 6px;
+  height: 6px;
+  z-index: 100;
+  background: red;
+}
+
 .file-view-header .file-toolbar-more-operations {
   height: 38px;
   padding: 0;
@@ -140,6 +152,7 @@ body {
     right: -500px;
     opacity: 0.5;
   }
+
   to {
     right: 0px;
     opacity: 1;
diff --git a/seahub/api2/endpoints/file_comments.py b/seahub/api2/endpoints/file_comments.py
index 376a4dea90..c372313434 100644
--- a/seahub/api2/endpoints/file_comments.py
+++ b/seahub/api2/endpoints/file_comments.py
@@ -14,7 +14,7 @@ from django.utils import timezone
 from seahub.api2.authentication import TokenAuthentication
 from seahub.api2.permissions import IsRepoAccessible
 from seahub.api2.throttling import UserRateThrottle
-from seahub.api2.utils import api_error, user_to_dict, to_python_boolean
+from seahub.api2.utils import api_error, user_to_dict, to_python_boolean, send_comment_update_event
 from seahub.avatar.settings import AVATAR_DEFAULT_SIZE
 from seahub.base.models import FileComment
 from seahub.utils.repo import get_repo_owner
@@ -132,6 +132,7 @@ class FileCommentsView(APIView):
         notification = detail
         notification['to_users'] = to_users
         comment['notification'] = notification
+        send_comment_update_event(file_uuid)
         return Response(comment)
 
 
@@ -166,6 +167,7 @@ class FileCommentView(APIView):
 
         file_comment.delete()
         SeadocCommentReply.objects.filter(comment_id=comment_id).delete()
+        send_comment_update_event(file_uuid)
         return Response({'success': True})
 
     def put(self, request, repo_id, file_uuid, comment_id):
@@ -204,6 +206,7 @@ class FileCommentView(APIView):
 
         comment = file_comment.to_dict()
         comment.update(user_to_dict(file_comment.author, request=request))
+        send_comment_update_event(file_uuid)
         return Response(comment)
 
 
@@ -313,6 +316,7 @@ class FileCommentRepliesView(APIView):
         notification = detail
         notification['to_users'] = to_users
         data['notification'] = notification
+        send_comment_update_event(file_uuid)
         return Response(data)
 
 
@@ -353,6 +357,7 @@ class FileCommentReplyView(APIView):
         if not reply:
             return api_error(status.HTTP_404_NOT_FOUND, 'reply not found.')
         reply.delete()
+        send_comment_update_event(file_uuid)
         return Response({'success': True})
 
     def put(self, request, repo_id, file_uuid, comment_id, reply_id):
@@ -380,4 +385,5 @@ class FileCommentReplyView(APIView):
         data = reply.to_dict()
         data.update(
             user_to_dict(reply.author, request=request))
+        send_comment_update_event(file_uuid)
         return Response(data)
diff --git a/seahub/api2/utils.py b/seahub/api2/utils.py
index 26e7a479a1..411faf0eb0 100644
--- a/seahub/api2/utils.py
+++ b/seahub/api2/utils.py
@@ -8,7 +8,7 @@ import json
 import re
 import logging
 import jwt
-
+import requests
 from collections import defaultdict
 from functools import wraps
 from django.core.cache import cache
@@ -34,9 +34,11 @@ from seahub.utils import get_user_repos
 from seahub.utils.mail import send_html_email_with_dj_template
 from django.utils.translation import gettext as _
 import seahub.settings as settings
+from seahub.tags.models import FileUUIDMap
 
 JWT_PRIVATE_KEY = getattr(settings, 'JWT_PRIVATE_KEY', '')
 
+
 logger = logging.getLogger(__name__)
 
 def api_error(code, msg):
@@ -361,3 +363,37 @@ def is_valid_internal_jwt(auth):
             return True
 
     return False
+
+
+def send_comment_update_event(file_uuid):
+    if not settings.ENABLE_NOTIFICATION_SERVER:
+        return
+    
+    uuid_map = FileUUIDMap.objects.get_fileuuidmap_by_uuid(file_uuid)
+    if not uuid_map:
+        return
+    repo_id = uuid_map.repo_id
+    event_data = {
+        "type": "comment-update",
+        "content": {
+            "repo_id": repo_id,
+            "type": "comment_updated",
+            "file_uuid": file_uuid,
+            "file_path": ""
+        }
+    }
+    notification_server_event_url = "%s/events" % settings.INNER_NOTIFICATION_SERVER_URL.rstrip('/')
+    payload = {
+        'exp': int(time.time()) + 500
+    }
+    jwt_token = jwt.encode(payload, JWT_PRIVATE_KEY, algorithm='HS256')
+    headers = {
+        'Authorization': 'Token %s' % jwt_token,
+
+    }
+    try:
+        resp = requests.post(notification_server_event_url, json=event_data, headers=headers)
+        if not resp.ok:
+            logger.error(f'Send comment update event failed: {resp.content}')
+    except Exception as e:
+        logger.error(f'Send comment update event error. ERROR: {e}')
diff --git a/seahub/settings.py b/seahub/settings.py
index b9fa9e225c..520ddc6bc3 100644
--- a/seahub/settings.py
+++ b/seahub/settings.py
@@ -982,6 +982,7 @@ ENABLE_WHITEBOARD = False
 
 ENABLE_NOTIFICATION_SERVER = os.environ.get('ENABLE_NOTIFICATION_SERVER', 'false') == 'true'
 NOTIFICATION_SERVER_URL = os.environ.get('NOTIFICATION_SERVER_URL', '')
+INNER_NOTIFICATION_SERVER_URL = os.environ.get('INNER_NOTIFICATION_SERVER_URL', 'http://127.0.0.1:8083' )
 
 ############################
 # Settings for Seahub Priv #