diff --git a/frontend/src/components/common/notification.js b/frontend/src/components/common/notification.js
index 26beef83f0..0551a11042 100644
--- a/frontend/src/components/common/notification.js
+++ b/frontend/src/components/common/notification.js
@@ -13,15 +13,17 @@ class Notification extends React.Component {
     this.state = {
       showNotice: false,
       unseenCount: 0,
-      noticeList: [],
+      generalNoticeList: [],
+      discussionNoticeList: [],
       currentTab: 'general',
       isShowNotificationDialog: this.getInitDialogState(),
     };
   }
 
   componentDidMount() {
-    seafileAPI.getUnseenNotificationCount().then(res => {
-      this.setState({ unseenCount: res.data.unseen_count });
+    seafileAPI.listAllNotifications().then(res => {
+      let unseen_count = res.data.general_notification.unseen_count + res.data.discussion_notification.unseen_count;
+      this.setState({ unseenCount: unseen_count });
     });
   }
 
@@ -45,50 +47,52 @@ class Notification extends React.Component {
     this.setState({
       showNotice: true,
       currentTab: tab
-    }, () => {
-      this.loadNotices();
     });
   };
 
   loadNotices = () => {
     let page = 1;
     let perPage = 5;
-    if (this.state.currentTab === 'general') {
-      seafileAPI.listNotifications(page, perPage).then(res => {
-        let noticeList = res.data.notification_list;
-        this.setState({ noticeList: noticeList });
+    seafileAPI.listAllNotifications(page, perPage).then(res => {
+      let generalNoticeList = res.data.general_notification.notification_list;
+      let discussionNoticeList = res.data.discussion_notification.notification_list;
+      this.setState({
+        generalNoticeList: generalNoticeList,
+        discussionNoticeList: discussionNoticeList
       });
-    }
-    if (this.state.currentTab === 'discussion') {
-      seafileAPI.listSdocNotifications(page, perPage).then(res => {
-        let noticeList = res.data.notification_list;
-        this.setState({ noticeList: noticeList });
-      });
-    }
-
+    });
   };
 
   onNoticeItemClick = (noticeItem) => {
-    let noticeList = this.state.noticeList.map(item => {
-      if (item.id === noticeItem.id) {
-        item.seen = true;
-      }
-      return item;
-    });
-
     if (this.state.currentTab === 'general') {
+      let noticeList = this.state.generalNoticeList.map(item => {
+        if (item.id === noticeItem.id) {
+          item.seen = true;
+        }
+        return item;
+      });
+      let unseenCount = this.state.unseenCount === 0 ? 0 : this.state.unseenCount - 1;
+      this.setState({
+        generalNoticeList: noticeList,
+        unseenCount: unseenCount,
+      });
       seafileAPI.markNoticeAsRead(noticeItem.id);
     }
     if (this.state.currentTab === 'discussion') {
+      let noticeList = this.state.discussionNoticeList.map(item => {
+        if (item.id === noticeItem.id) {
+          item.seen = true;
+        }
+        return item;
+      });
+      let unseenCount = this.state.unseenCount === 0 ? 0 : this.state.unseenCount - 1;
+      this.setState({
+        discussionNoticeList: noticeList,
+        unseenCount: unseenCount,
+      });
       seafileAPI.markSdocNoticeAsRead(noticeItem.id);
     }
 
-    let unseenCount = this.state.unseenCount === 0 ? 0 : this.state.unseenCount - 1;
-    this.setState({
-      noticeList: noticeList,
-      unseenCount: unseenCount,
-    });
-
   };
 
   getInitDialogState = () => {
@@ -137,15 +141,27 @@ class Notification extends React.Component {
             onMarkAllNotifications={this.onMarkAllNotifications}
             tabItemClick={this.tabItemClick}
           >
-            <ul className="notice-list list-unstyled" id="notice-popover">
-              {this.state.noticeList.map(item => {
-                return (<NoticeItem key={item.id} noticeItem={item} onNoticeItemClick={this.onNoticeItemClick}/>);
-              })}
-            </ul>
+            {this.state.currentTab === 'general' &&
+              <ul className="notice-list list-unstyled" id="notice-popover">
+                {this.state.generalNoticeList.map(item => {
+                  return (<NoticeItem key={item.id} noticeItem={item} onNoticeItemClick={this.onNoticeItemClick}/>);
+                })}
+              </ul>
+            }
+            {this.state.currentTab === 'discussion' &&
+              <ul className="notice-list list-unstyled" id="notice-popover">
+                {this.state.discussionNoticeList.map(item => {
+                  return (<NoticeItem key={item.id} noticeItem={item} onNoticeItemClick={this.onNoticeItemClick}/>);
+                })}
+              </ul>
+            }
           </NotificationPopover>
         }
         {this.state.isShowNotificationDialog &&
-          <UserNotificationsDialog onNotificationDialogToggle={this.onNotificationDialogToggle} />
+          <UserNotificationsDialog
+            onNotificationDialogToggle={this.onNotificationDialogToggle}
+            tabItemClick={this.tabItemClick}
+          />
         }
       </div>
     );
diff --git a/frontend/src/user-notifications.js b/frontend/src/user-notifications.js
index 6d264400be..c2d669e967 100644
--- a/frontend/src/user-notifications.js
+++ b/frontend/src/user-notifications.js
@@ -1,6 +1,16 @@
-import React from 'react';
+import React, { Fragment } from 'react';
 import PropTypes from 'prop-types';
-import { Modal, ModalHeader, ModalBody, Dropdown, DropdownToggle, DropdownMenu, DropdownItem } from 'reactstrap';
+import {
+  Modal,
+  ModalHeader,
+  ModalBody,
+  Dropdown,
+  DropdownToggle,
+  DropdownMenu,
+  DropdownItem,
+  TabPane,
+  Nav, NavItem, NavLink, TabContent
+} from 'reactstrap';
 import { Utils } from './utils/utils';
 import { gettext } from './utils/constants';
 import { seafileAPI } from './utils/seafile-api';
@@ -24,6 +34,7 @@ class UserNotificationsDialog extends React.Component {
       hasNextPage: false,
       items: [],
       isItemMenuShow: false,
+      activeTab: 'general',
     };
   }
 
@@ -37,56 +48,132 @@ class UserNotificationsDialog extends React.Component {
     });
   }
 
-  getItems = (page) => {
+  getItems = (page, is_scroll = false) => {
     this.setState({ isLoading: true });
-    seafileAPI.listNotifications(page, PER_PAGE).then((res) => {
-      this.setState({
-        isLoading: false,
-        items: [...this.state.items, ...res.data.notification_list],
-        currentPage: page,
-        hasNextPage: Utils.hasNextPage(page, PER_PAGE, res.data.count)
+    if (this.state.activeTab === 'general') {
+      seafileAPI.listNotifications(page, PER_PAGE).then((res) => {
+        if (is_scroll) {
+          this.setState({
+            isLoading: false,
+            items: [...this.state.items, ...res.data.notification_list],
+            currentPage: page,
+            hasNextPage: Utils.hasNextPage(page, PER_PAGE, res.data.count)
+          });
+        } else {
+          this.setState({
+            isLoading: false,
+            items: [...res.data.notification_list],
+            currentPage: page,
+            hasNextPage: Utils.hasNextPage(page, PER_PAGE, res.data.count)
+          });
+        }
+      }).catch((error) => {
+        this.setState({
+          isLoading: false,
+          errorMsg: Utils.getErrorMsg(error, true) // true: show login tip if 403
+        });
       });
-    }).catch((error) => {
-      this.setState({
-        isLoading: false,
-        errorMsg: Utils.getErrorMsg(error, true) // true: show login tip if 403
+    } else if (this.state.activeTab === 'discussion') {
+      seafileAPI.listSdocNotifications(page, PER_PAGE).then((res) => {
+        if (is_scroll) {
+          this.setState({
+            isLoading: false,
+            items: [...this.state.items, ...res.data.notification_list],
+            currentPage: page,
+            hasNextPage: Utils.hasNextPage(page, PER_PAGE, res.data.count)
+          });
+        } else {
+          this.setState({
+            isLoading: false,
+            items: [...res.data.notification_list],
+            currentPage: page,
+            hasNextPage: Utils.hasNextPage(page, PER_PAGE, res.data.count)
+          });
+        }
+
+      }).catch((error) => {
+        this.setState({
+          isLoading: false,
+          errorMsg: Utils.getErrorMsg(error, true) // true: show login tip if 403
+        });
       });
-    });
+    }
+
   };
 
   markAllRead = () => {
-    seafileAPI.updateNotifications().then((res) => {
-      this.setState({
-        items: this.state.items.map(item => {
-          item.seen = true;
-          return item;
-        })
+    if (this.state.activeTab === 'general') {
+      seafileAPI.updateNotifications().then((res) => {
+        this.setState({
+          items: this.state.items.map(item => {
+            item.seen = true;
+            return item;
+          })
+        });
+      }).catch((error) => {
+        this.setState({
+          isLoading: false,
+          errorMsg: Utils.getErrorMsg(error, true) // true: show login tip if 403
+        });
       });
-    }).catch((error) => {
-      this.setState({
-        isLoading: false,
-        errorMsg: Utils.getErrorMsg(error, true) // true: show login tip if 403
+    } else if (this.state.activeTab === 'discussion') {
+      seafileAPI.updateSdocNotifications().then((res) => {
+        this.setState({
+          items: this.state.items.map(item => {
+            item.seen = true;
+            return item;
+          })
+        });
+      }).catch((error) => {
+        this.setState({
+          isLoading: false,
+          errorMsg: Utils.getErrorMsg(error, true) // true: show login tip if 403
+        });
       });
-    });
+    }
+
   };
 
   clearAll = () => {
-    seafileAPI.deleteNotifications().then((res) => {
-      this.setState({
-        items: []
+    if (this.state.activeTab === 'general') {
+      seafileAPI.deleteNotifications().then((res) => {
+        this.setState({
+          items: []
+        });
+      }).catch((error) => {
+        this.setState({
+          isLoading: false,
+          errorMsg: Utils.getErrorMsg(error, true) // true: show login tip if 403
+        });
       });
-    }).catch((error) => {
-      this.setState({
-        isLoading: false,
-        errorMsg: Utils.getErrorMsg(error, true) // true: show login tip if 403
+    } else if (this.state.activeTab === 'discussion') {
+      seafileAPI.deleteSdocNotifications().then((res) => {
+        this.setState({
+          items: []
+        });
+      }).catch((error) => {
+        this.setState({
+          isLoading: false,
+          errorMsg: Utils.getErrorMsg(error, true) // true: show login tip if 403
+        });
       });
-    });
+    }
   };
 
   toggle = () => {
     this.props.onNotificationDialogToggle();
   };
 
+  tabItemClick = (e) => {
+    let tab = e.target.getAttribute('value');
+    this.setState({
+      activeTab: tab,
+      currentPage: 1
+    }, () => {
+      this.getItems(this.state.currentPage);
+    });
+  };
+
   toggleDropDownMenu = () => {
     this.setState({ isItemMenuShow: !this.state.isItemMenuShow });
   };
@@ -96,7 +183,7 @@ class UserNotificationsDialog extends React.Component {
       return;
     }
     if (this.notificationTableRef.offsetHeight + this.notificationTableRef.scrollTop + 1 >= this.tableRef.offsetHeight) {
-      this.getItems(this.state.currentPage + 1);
+      this.getItems(this.state.currentPage + 1, true);
     }
   };
 
@@ -130,6 +217,49 @@ class UserNotificationsDialog extends React.Component {
     );
   };
 
+
+  renderNoticeContent = (content) => {
+    let activeTab = this.state.activeTab;
+    return (
+      <Fragment>
+        <div className="notice-dialog-side">
+          <Nav pills>
+            <NavItem role="tab" aria-selected={activeTab === 'general'} aria-controls="general-notice-panel">
+              <NavLink className={activeTab === 'general' ? 'active' : ''} onClick={this.tabItemClick} tabIndex="0" value="general">
+                {gettext('General')}
+              </NavLink>
+            </NavItem>
+            <NavItem role="tab" aria-selected={activeTab === 'discussion'} aria-controls="discussion-notice-panel">
+              <NavLink className={activeTab === 'discussion' ? 'active' : ''} onClick={this.tabItemClick} tabIndex="1" value="discussion">
+                {gettext('Discussion')}
+              </NavLink>
+            </NavItem>
+          </Nav>
+        </div>
+        <div className="notice-dialog-main">
+          <TabContent activeTab={this.state.activeTab}>
+            {activeTab === 'general' &&
+              <TabPane tabId="general" role="tabpanel" id="general-notice-panel">
+                <div className="notification-dialog-body" ref={ref => this.notificationTableRef = ref}
+                  onScroll={this.onHandleScroll}>
+                  {content}
+                </div>
+              </TabPane>
+            }
+            {activeTab === 'discussion' &&
+              <TabPane tabId="discussion" role="tabpanel" id="discussion-notice-panel">
+                <div className="notification-dialog-body" ref={ref => this.notificationTableRef = ref}
+                  onScroll={this.onHandleScroll}>
+                  {content}
+                </div>
+              </TabPane>
+            }
+          </TabContent>
+        </div>
+      </Fragment>
+    );
+  };
+
   render() {
     const { isLoading, errorMsg, items } = this.state;
     let content;
@@ -173,9 +303,7 @@ class UserNotificationsDialog extends React.Component {
         zIndex={1046}>
         <ModalHeader close={this.renderHeaderRowBtn()} toggle={this.toggle}>{gettext('Notifications')}</ModalHeader>
         <ModalBody className="notification-modal-body">
-          <div className="notification-dialog-body" ref={ref => this.notificationTableRef = ref} onScroll={this.onHandleScroll}>
-            {content}
-          </div>
+          {this.renderNoticeContent(content)}
         </ModalBody>
       </Modal>
     );
@@ -184,6 +312,7 @@ class UserNotificationsDialog extends React.Component {
 
 UserNotificationsDialog.propTypes = {
   onNotificationDialogToggle: PropTypes.func.isRequired,
+  tabItemClick: PropTypes.func.isRequired,
 };
 
 export default UserNotificationsDialog;
diff --git a/frontend/src/utils/seafile-api.js b/frontend/src/utils/seafile-api.js
index 4d0f794c98..0b819d171c 100644
--- a/frontend/src/utils/seafile-api.js
+++ b/frontend/src/utils/seafile-api.js
@@ -1451,6 +1451,15 @@ class SeafileAPI {
   }
 
   // ---- Notification API
+  listAllNotifications(page, perPage) {
+    const url = this.server + '/api/v2.1/all-notifications/';
+    let params = {
+      page: page,
+      per_page: perPage
+    };
+    return this.req.get(url, { params: params });
+  }
+
   listNotifications(page, perPage) {
     const url = this.server + '/api/v2.1/notifications/';
     let params = {
@@ -1485,6 +1494,11 @@ class SeafileAPI {
     return this.req.delete(url);
   }
 
+  deleteSdocNotifications() {
+    const url = this.server + '/api/v2.1/sdoc-notifications/';
+    return this.req.delete(url);
+  }
+
   getUnseenNotificationCount() {
     const url = this.server + '/api/v2.1/notifications/';
     return this.req.get(url);
diff --git a/seahub/api2/endpoints/notifications.py b/seahub/api2/endpoints/notifications.py
index ec01b2be7a..dcabbabfea 100644
--- a/seahub/api2/endpoints/notifications.py
+++ b/seahub/api2/endpoints/notifications.py
@@ -227,7 +227,7 @@ class SdocNotificationsView(APIView):
         """
 
         username = request.user.username
-        unseen_notices = SeadocNotification.objects.filter(username, seen=False)
+        unseen_notices = SeadocNotification.objects.filter(username=username, seen=False)
         for notice in unseen_notices:
             notice.seen = True
             notice.save()
@@ -236,6 +236,21 @@ class SdocNotificationsView(APIView):
         cache.delete(cache_key)
 
         return Response({'success': True})
+    
+    def delete(self, request):
+        """ delete a sdoc notification by username
+
+        Permission checking:
+        1. login user.
+        """
+        username = request.user.username
+
+        SeadocNotification.objects.remove_user_notifications(username)
+
+        cache_key = get_cache_key_of_unseen_sdoc_notifications(username)
+        cache.delete(cache_key)
+
+        return Response({'success': True})
 
 
 
@@ -283,4 +298,97 @@ class SdocNotificationView(APIView):
         cache_key = get_cache_key_of_unseen_sdoc_notifications(username)
         cache.delete(cache_key)
 
-        return Response({'success': True})
\ No newline at end of file
+        return Response({'success': True})
+    
+
+class AllNotificationsView(APIView):
+
+    authentication_classes = (TokenAuthentication, SessionAuthentication)
+    permission_classes = (IsAuthenticated,)
+    throttle_classes = (UserRateThrottle,)
+
+    def get(self, request):
+        """ used for get all notifications
+        general and discussion
+
+        Permission checking:
+        1. login user.
+        """
+        result = {
+            'general_notification': {},
+            'discussion_notification': {}
+        }
+
+        username = request.user.username
+
+        try:
+            per_page = int(request.GET.get('per_page', ''))
+            page = int(request.GET.get('page', ''))
+        except ValueError:
+            per_page = 25
+            page = 1
+
+        start = (page - 1) * per_page
+        end = page * per_page
+
+        notice_list = UserNotification.objects.get_user_notifications(username)[start:end]
+        sdoc_notice_list = SeadocNotification.objects.list_all_by_user(username, start, end)
+
+        result_notices = update_notice_detail(request, notice_list)
+        sdoc_result_notices = update_sdoc_notice_detail(request, sdoc_notice_list)
+
+        notification_list = []
+        sdoc_notification_list = []
+
+        for i in result_notices:
+            if i.detail is not None:
+                notice = {}
+                notice['id'] = i.id
+                notice['type'] = i.msg_type
+                notice['detail'] = i.detail
+                notice['time'] = datetime_to_isoformat_timestr(i.timestamp)
+                notice['seen'] = i.seen
+
+                notification_list.append(notice)
+        
+        for i in sdoc_result_notices:
+            if i.detail is not None:
+                notice = {}
+                notice['id'] = i.id
+                notice['type'] = i.msg_type
+                notice['detail'] = i.detail
+                notice['time'] = datetime_to_isoformat_timestr(i.created_at)
+                notice['seen'] = i.seen
+
+                sdoc_notification_list.append(notice)
+
+        cache_key = get_cache_key_of_unseen_notifications(username)
+        unseen_count_from_cache = cache.get(cache_key, None)
+
+        sdoc_cache_key = get_cache_key_of_unseen_sdoc_notifications(username)
+        sdoc_unseen_count_from_cache = cache.get(sdoc_cache_key, None)
+
+        # for case of count value is `0`
+        if unseen_count_from_cache is not None:
+            result['general_notification']['unseen_count'] = unseen_count_from_cache
+        else:
+            unseen_count = UserNotification.objects.filter(to_user=username, seen=False).count()
+            result['general_notification']['unseen_count'] = unseen_count
+            cache.set(cache_key, unseen_count)
+
+        if sdoc_unseen_count_from_cache is not None:
+            result['discussion_notification']['unseen_count'] = sdoc_unseen_count_from_cache
+        else:
+            sdoc_unseen_count = SeadocNotification.objects.filter(username=username, seen=False).count()
+            result['discussion_notification']['unseen_count'] = sdoc_unseen_count
+            cache.set(sdoc_cache_key, sdoc_unseen_count)
+
+        total_count = UserNotification.objects.filter(to_user=username).count()
+        sdoc_total_count = SeadocNotification.objects.filter(username=username).count()
+
+        result['general_notification']['notification_list'] = notification_list
+        result['discussion_notification']['notification_list'] = sdoc_notification_list
+        result['general_notification']['count'] = total_count
+        result['discussion_notification']['count'] = sdoc_total_count
+
+        return Response(result)
\ No newline at end of file
diff --git a/seahub/seadoc/models.py b/seahub/seadoc/models.py
index 6afae79629..7e0f96bf14 100644
--- a/seahub/seadoc/models.py
+++ b/seahub/seadoc/models.py
@@ -272,6 +272,10 @@ class SeadocNotificationManager(models.Manager):
     
     def list_all_by_user(self, username, start, end):
         return self.filter(username=username).order_by('-created_at')[start: end]
+    
+    def remove_user_notifications(self, username):
+        """"Remove all user notifications."""
+        self.filter(username=username).delete()
 
 
 class SeadocNotification(models.Model):
diff --git a/seahub/urls.py b/seahub/urls.py
index e3a09781cd..ad1d7690b4 100644
--- a/seahub/urls.py
+++ b/seahub/urls.py
@@ -91,7 +91,7 @@ from seahub.api2.endpoints.invitations import InvitationsView, InvitationsBatchV
 from seahub.api2.endpoints.invitation import InvitationView, InvitationRevokeView
 from seahub.api2.endpoints.repo_share_invitations import RepoShareInvitationsView, RepoShareInvitationsBatchView
 from seahub.api2.endpoints.repo_share_invitation import RepoShareInvitationView
-from seahub.api2.endpoints.notifications import NotificationsView, NotificationView, SdocNotificationView, SdocNotificationsView
+from seahub.api2.endpoints.notifications import NotificationsView, NotificationView, SdocNotificationView, SdocNotificationsView, AllNotificationsView
 from seahub.api2.endpoints.repo_file_uploaded_bytes import RepoFileUploadedBytesView
 from seahub.api2.endpoints.user_avatar import UserAvatarView
 from seahub.api2.endpoints.wikis import WikisView, WikiView
@@ -524,6 +524,7 @@ urlpatterns = [
     re_path(r'^api/v2.1/notification/$', NotificationView.as_view(), name='api-v2.1-notification'),
     re_path(r'^api/v2.1/sdoc-notifications/$', SdocNotificationsView.as_view(), name='api-v2.1-sdoc-notifications'),
     re_path(r'^api/v2.1/sdoc-notification/$', SdocNotificationView.as_view(), name='api-v2.1-notification'),
+    re_path(r'^api/v2.1/all-notifications/$', AllNotificationsView.as_view(), name='api-v2.1-all-notification'),
 
     ## user::invitations
     re_path(r'^api/v2.1/invitations/$', InvitationsView.as_view()),