diff --git a/frontend/src/pages/sdoc/sdoc-editor/external-operations.js b/frontend/src/pages/sdoc/sdoc-editor/external-operations.js
index 54c801b853..1c531ea4d7 100644
--- a/frontend/src/pages/sdoc/sdoc-editor/external-operations.js
+++ b/frontend/src/pages/sdoc/sdoc-editor/external-operations.js
@@ -14,7 +14,8 @@ const propTypes = {
   docPerm: PropTypes.string.isRequired,
   isStarred: PropTypes.bool.isRequired,
   toggleStar: PropTypes.func.isRequired,
-  unmarkDraft: PropTypes.func.isRequired
+  unmarkDraft: PropTypes.func.isRequired,
+  onNewNotification: PropTypes.func.isRequired
 };
 
 class ExternalOperations extends React.Component {
@@ -33,8 +34,9 @@ class ExternalOperations extends React.Component {
     this.unsubscribeStar = eventBus.subscribe(EXTERNAL_EVENT.TOGGLE_STAR, this.toggleStar);
     this.unsubscribeUnmark = eventBus.subscribe(EXTERNAL_EVENT.UNMARK_AS_DRAFT, this.unmark);
     this.unsubscribeShare = eventBus.subscribe(EXTERNAL_EVENT.SHARE_SDOC, this.onShareToggle);
-    this.unsubscribeShare = eventBus.subscribe(EXTERNAL_EVENT.FREEZE_DOCUMENT, this.onFreezeDocument);
-    this.unsubscribeShare = eventBus.subscribe(EXTERNAL_EVENT.UNFREEZE, this.unFreeze);
+    this.unsubscribeFreezeDocument = eventBus.subscribe(EXTERNAL_EVENT.FREEZE_DOCUMENT, this.onFreezeDocument);
+    this.unsubscribeUnfreeze = eventBus.subscribe(EXTERNAL_EVENT.UNFREEZE, this.unFreeze);
+    this.unsubscribeNewNotification = eventBus.subscribe(EXTERNAL_EVENT.NEW_NOTIFICATION, this.onNewNotification);
   }
 
   componentWillUnmount() {
@@ -42,6 +44,9 @@ class ExternalOperations extends React.Component {
     this.unsubscribeStar();
     this.unsubscribeUnmark();
     this.unsubscribeShare();
+    this.unsubscribeFreezeDocument();
+    this.unsubscribeUnfreeze();
+    this.unsubscribeNewNotification();
   }
 
   onInternalLinkToggle = () => {
@@ -103,6 +108,10 @@ class ExternalOperations extends React.Component {
     });
   };
 
+  onNewNotification = () => {
+    this.props.onNewNotification();
+  };
+
   render() {
     const { repoID, docPath, docName, docPerm } = this.props;
     const { isShowInternalLinkDialog, isShowShareDialog } = this.state;
diff --git a/frontend/src/pages/sdoc/sdoc-editor/index.js b/frontend/src/pages/sdoc/sdoc-editor/index.js
index 39ca48ef99..622aabde8b 100644
--- a/frontend/src/pages/sdoc/sdoc-editor/index.js
+++ b/frontend/src/pages/sdoc/sdoc-editor/index.js
@@ -15,9 +15,7 @@ export default class SdocEditor extends React.Component {
   }
 
   componentDidMount() {
-    const { docName } = window.seafile;
-    const fileIcon = Utils.getFileIconUrl(docName, 192);
-    document.getElementById('favicon').href = fileIcon;
+    this.onSetFavicon();
   }
 
   toggleStar = (isStarred) => {
@@ -28,6 +26,19 @@ export default class SdocEditor extends React.Component {
     this.setState({isDraft: false});
   };
 
+  onSetFavicon = (suffix) => {
+    let { docName } = window.seafile;
+    if (suffix) {
+      docName = docName + suffix;
+    }
+    const fileIcon = Utils.getFileIconUrl(docName, 192);
+    document.getElementById('favicon').href = fileIcon;
+  };
+
+  onNewNotification = () => {
+    this.onSetFavicon('_notification');
+  };
+
   render() {
     const { repoID, docPath, docName, docPerm } = window.seafile;
     const { isStarred, isDraft } = this.state;
@@ -42,6 +53,7 @@ export default class SdocEditor extends React.Component {
           isStarred={isStarred}
           toggleStar={this.toggleStar}
           unmarkDraft={this.unmarkDraft}
+          onNewNotification={this.onNewNotification}
         />
       </Fragment>
     );
diff --git a/frontend/src/utils/utils.js b/frontend/src/utils/utils.js
index 75600cef60..cd3dff5c05 100644
--- a/frontend/src/utils/utils.js
+++ b/frontend/src/utils/utils.js
@@ -106,6 +106,7 @@ export const Utils = {
     // default
     'default' : 'file.png',
     'sdoc': 'sdoc.png',
+    'sdoc_notification': 'sdoc_notification.ico'
   },
 
   // check if a file is an image
diff --git a/media/img/file/192/sdoc_notification.ico b/media/img/file/192/sdoc_notification.ico
new file mode 100644
index 0000000000..2942705a02
Binary files /dev/null and b/media/img/file/192/sdoc_notification.ico differ