diff --git a/frontend/src/pages/sys-admin/departments/department-detail.js b/frontend/src/pages/sys-admin/departments/department-detail.js
index 4d4dddccf4..87d1fe9f5d 100644
--- a/frontend/src/pages/sys-admin/departments/department-detail.js
+++ b/frontend/src/pages/sys-admin/departments/department-detail.js
@@ -2,6 +2,7 @@ import React, { Fragment } from 'react';
 import PropTypes from 'prop-types';
 import moment from 'moment';
 import { Link } from '@reach/router';
+import Paginator from '../../../components/paginator';
 import { seafileAPI } from '../../../utils/seafile-api';
 import { Utils } from '../../../utils/utils.js';
 import toaster from '../../../components/toast';
@@ -35,6 +36,11 @@ class DepartmentDetail extends React.Component {
       isItemFreezed: false,
       ancestorGroups: [],
       members: [],
+      membersErrorMsg: '',
+      membersPageInfo: {
+      },
+      membersPage: 1,
+      membersPerPage: 25,
       deletedMember: {},
       isShowAddMemberDialog: false,
       showDeleteMemberDialog: false,
@@ -54,13 +60,15 @@ class DepartmentDetail extends React.Component {
   componentDidMount() {
     const groupID = this.props.groupID;
     this.listGroupRepo(groupID);
-    this.listMembers(groupID);
+    this.getDepartmentInfo(groupID);
+    this.listMembers(groupID, this.state.membersPage, this.state.membersPerPage);
   }
 
   componentWillReceiveProps(nextProps) {
     if (this.props.groupID !== nextProps.groupID) {
       this.listGroupRepo(nextProps.groupID);
-      this.listMembers(nextProps.groupID);
+      this.getDepartmentInfo(nextProps.groupID);
+      this.listMembers(nextProps.groupID, this.state.membersPage, this.state.membersPerPage);
     }
   }
 
@@ -73,10 +81,9 @@ class DepartmentDetail extends React.Component {
     });
   }
 
-  listMembers = (groupID) => {
+  getDepartmentInfo = (groupID) => {
     seafileAPI.sysAdminGetDepartmentInfo(groupID, true).then(res => {
       this.setState({
-        members: res.data.members,
         groups: res.data.groups,
         ancestorGroups: res.data.ancestor_groups,
         groupName: res.data.name,
@@ -87,6 +94,34 @@ class DepartmentDetail extends React.Component {
     });
   }
 
+  listMembers = (groupID, page, perPage) => {
+    seafileAPI.sysAdminListGroupMembers(groupID, page, perPage).then((res) => {
+      this.setState({
+        members: res.data.members,
+        membersPageInfo: res.data.page_info
+      });
+    }).catch(error => {
+      let errMessage = Utils.getErrorMsg(error);
+      this.setState({membersErrorMsg: errMessage});
+    });
+  }
+
+  getPreviousPageList = () => {
+    this.listMembers(this.props.groupID, this.state.membersPageInfo.current_page - 1, this.state.membersPerPage);
+  }
+
+  getNextPageList = () => {
+    this.listMembers(this.props.groupID, this.state.membersPageInfo.current_page + 1, this.state.membersPerPage);
+  }
+
+  resetPerPage = (perPage) => {
+    this.setState({
+      membersPerPage: perPage
+    }, () => {
+      this.listMembers(this.props.groupID, 1, perPage);
+    });
+  }
+
   listSubDepartGroups = (groupID) => {
     seafileAPI.sysAdminGetDepartmentInfo(groupID, true).then(res => {
       this.setState({ groups: res.data.groups });
@@ -114,7 +149,7 @@ class DepartmentDetail extends React.Component {
   }
 
   onMemberChanged = () => {
-    this.listMembers(this.props.groupID);
+    this.listMembers(this.props.groupID, this.state.membersPageInfo.current_page, this.state.membersPerPage);
   }
 
   toggleItemFreezed = (isFreezed) => {
@@ -142,7 +177,7 @@ class DepartmentDetail extends React.Component {
   }
 
   showDeleteDepartDialog = (subGroup) => {
-    this.setState({ 
+    this.setState({
       showDeleteDepartDialog: true,
       subGroupID: subGroup.id,
       subGroupName: subGroup.name
@@ -157,7 +192,7 @@ class DepartmentDetail extends React.Component {
   }
 
   render() {
-    const { members, repos, groups } = this.state;
+    const { members, membersErrorMsg, repos, groups } = this.state;
     const groupID = this.props.groupID;
     const topBtn = 'btn btn-secondary operation-item';
     const topbarChildren = (
@@ -207,7 +242,7 @@ class DepartmentDetail extends React.Component {
             <div className="cur-view-path">
               <div className="fleft">
                 <h3 className="sf-heading">
-                  {groupID ? 
+                  {groupID ?
                     <Link to={siteRoot + 'sys/departments/'}>{gettext('Departments')}</Link>
                     : <span>{gettext('Departments')}</span>
                   }
@@ -253,14 +288,16 @@ class DepartmentDetail extends React.Component {
                 }
               </div>
             </div>
-            
+
             <div className="cur-view-subcontainer org-members">
               <div className="cur-view-path">
                 <div className="fleft"><h3 className="sf-heading">{gettext('Members')}</h3></div>
               </div>
               <div className="cur-view-content">
-                {(members && members.length === 1 && members[0].role === 'Owner') ?
+                {membersErrorMsg ? <p className="error text-center">{membersErrorMsg}</p> :
+                  members.length == 0 ?
                   <p className="no-member">{gettext('No members')}</p> :
+                  <Fragment>
                   <table>
                     <thead>
                       <tr>
@@ -287,6 +324,17 @@ class DepartmentDetail extends React.Component {
                       })}
                     </tbody>
                   </table>
+                  {this.state.membersPageInfo &&
+                  <Paginator
+                    gotoPreviousPage={this.getPreviousPageList}
+                    gotoNextPage={this.getNextPageList}
+                    currentPage={this.state.membersPageInfo.current_page}
+                    hasNextPage={this.state.membersPageInfo.has_next_page}
+                    curPerPage={this.state.membersPerPage}
+                    resetPerPage={this.resetPerPage}
+                  />
+                  }
+                  </Fragment>
                 }
               </div>
             </div>
diff --git a/frontend/src/pages/sys-admin/groups/group-members.js b/frontend/src/pages/sys-admin/groups/group-members.js
index a82c2e43aa..88eecb8d1c 100644
--- a/frontend/src/pages/sys-admin/groups/group-members.js
+++ b/frontend/src/pages/sys-admin/groups/group-members.js
@@ -6,6 +6,7 @@ import { siteRoot, gettext } from '../../../utils/constants';
 import toaster from '../../../components/toast';
 import EmptyTip from '../../../components/empty-tip';
 import Loading from '../../../components/loading';
+import Paginator from '../../../components/paginator';
 import CommonOperationConfirmationDialog from '../../../components/dialog/common-operation-confirmation-dialog';
 import SysAdminGroupAddMemberDialog from '../../../components/dialog/sysadmin-dialog/sysadmin-group-add-member-dialog';
 import SysAdminGroupRoleEditor from '../../../components/select-editor/sysadmin-group-role-editor';
@@ -19,8 +20,16 @@ class Content extends Component {
     super(props);
   }
 
+  getPreviousPageList = () => {
+    this.props.getListByPage(this.props.pageInfo.current_page - 1);
+  }
+
+  getNextPageList = () => {
+    this.props.getListByPage(this.props.pageInfo.current_page + 1);
+  }
+
   render() {
-    const { loading, errorMsg, items } = this.props;
+    const { loading, errorMsg, items, pageInfo, curPerPage } = this.props;
     if (loading) {
       return <Loading />;
     } else if (errorMsg) {
@@ -53,9 +62,19 @@ class Content extends Component {
               })}
             </tbody>
           </table>
+          {pageInfo &&
+          <Paginator
+            gotoPreviousPage={this.getPreviousPageList}
+            gotoNextPage={this.getNextPageList}
+            currentPage={pageInfo.current_page}
+            hasNextPage={pageInfo.has_next_page}
+            curPerPage={curPerPage}
+            resetPerPage={this.props.resetPerPage}
+          />
+          }
         </Fragment>
       );
-      return items.length ? table : emptyTip; 
+      return items.length ? table : emptyTip;
     }
   }
 }
@@ -110,7 +129,7 @@ class Item extends Component {
           <td>
             {item.role == 'Owner' ?
               gettext('Owner') :
-              <SysAdminGroupRoleEditor 
+              <SysAdminGroupRoleEditor
                 isTextMode={true}
                 isEditIconShow={isOpIconShown}
                 roleOptions={['Member', 'Admin']}
@@ -126,7 +145,7 @@ class Item extends Component {
           </td>
         </tr>
         {isDeleteDialogOpen &&
-          <CommonOperationConfirmationDialog 
+          <CommonOperationConfirmationDialog
             title={gettext('Remove Member')}
             message={dialogMsg}
             executeOperation={this.removeMember}
@@ -148,16 +167,33 @@ class GroupMembers extends Component {
       errorMsg: '',
       groupName: '',
       memberList: [],
+      pageInfo: {},
+      currentPage: 1,
+      perPage: 25,
       isAddMemberDialogOpen: false
     };
   }
 
   componentDidMount () {
-    seafileAPI.sysAdminListGroupMembers(this.props.groupID).then((res) => {
+
+    let urlParams = (new URL(window.location)).searchParams;
+    const { currentPage, perPage } = this.state;
+    this.setState({
+      currentPage: parseInt(urlParams.get('page') || currentPage),
+      perPage: parseInt(urlParams.get('per_page') || perPage)
+    }, () => {
+      this.getListByPage(this.state.currentPage);
+    });
+  }
+
+  getListByPage = (page) => {
+    const { perPage } = this.state;
+    seafileAPI.sysAdminListGroupMembers(this.props.groupID, page, perPage).then((res) => {
       this.setState({
         loading: false,
         memberList: res.data.members,
-        groupName: res.data.group_name
+        groupName: res.data.group_name,
+        pageInfo: res.data.page_info
       });
     }).catch((error) => {
       this.setState({
@@ -167,6 +203,14 @@ class GroupMembers extends Component {
     });
   }
 
+  resetPerPage = (perPage) => {
+    this.setState({
+      perPage: perPage
+    }, () => {
+      this.getListByPage(1);
+    });
+  }
+
   toggleAddMemgerDialog = () => {
     this.setState({isAddMemberDialogOpen: !this.state.isAddMemberDialogOpen});
   }
@@ -238,7 +282,7 @@ class GroupMembers extends Component {
         </MainPanelTopbar>
         <div className="main-panel-center flex-row">
           <div className="cur-view-container">
-            <GroupNav 
+            <GroupNav
               currentItem="members"
               groupID={this.props.groupID}
               groupName={this.state.groupName}
@@ -250,6 +294,10 @@ class GroupMembers extends Component {
                 items={this.state.memberList}
                 removeMember={this.removeMember}
                 updateMemberRole={this.updateMemberRole}
+                pageInfo={this.state.pageInfo}
+                curPerPage={this.state.perPage}
+                getListByPage={this.getListByPage}
+                resetPerPage={this.resetPerPage}
               />
             </div>
           </div>
diff --git a/seahub/api2/endpoints/admin/address_book/groups.py b/seahub/api2/endpoints/admin/address_book/groups.py
index 4b2083f9d2..f678f91dae 100644
--- a/seahub/api2/endpoints/admin/address_book/groups.py
+++ b/seahub/api2/endpoints/admin/address_book/groups.py
@@ -184,20 +184,7 @@ class AdminAddressBookGroup(APIView):
         for group in groups:
             ret_groups.append(address_book_group_to_dict(group))
 
-        try:
-            members = ccnet_api.get_group_members(group_id)
-        except Exception as e:
-            logger.error(e)
-            error_msg = 'Internal Server Error'
-            return api_error(status.HTTP_500_INTERNAL_SERVER_ERROR, error_msg)
-
-        for m in members:
-            member_info = self._get_address_book_group_memeber_info(request,
-                    m, avatar_size)
-            ret_members.append(member_info)
-
         ret_dict['groups'] = ret_groups
-        ret_dict['members'] = ret_members
 
         if return_ancestors:
             # get ancestor groups and remove last group which is self
diff --git a/seahub/api2/endpoints/admin/group_members.py b/seahub/api2/endpoints/admin/group_members.py
index 79135dfe91..8887a9aa57 100644
--- a/seahub/api2/endpoints/admin/group_members.py
+++ b/seahub/api2/endpoints/admin/group_members.py
@@ -45,18 +45,33 @@ class AdminGroupMembers(APIView):
             return api_error(status.HTTP_404_NOT_FOUND, error_msg)
 
         try:
-            avatar_size = int(request.GET.get('avatar_size',
-                AVATAR_DEFAULT_SIZE))
+            avatar_size = int(request.GET.get('avatar_size', AVATAR_DEFAULT_SIZE))
         except ValueError:
             avatar_size = AVATAR_DEFAULT_SIZE
 
         try:
-            members = ccnet_api.get_group_members(group_id)
+            page = int(request.GET.get('page', '1'))
+            per_page = int(request.GET.get('per_page', '100'))
+        except ValueError:
+            page = 1
+            per_page = 100
+
+        start = (page - 1) * per_page
+        limit = per_page + 1
+
+        try:
+            members = ccnet_api.get_group_members(group_id, start, limit)
         except Exception as e:
             logger.error(e)
             error_msg = 'Internal Server Error'
             return api_error(status.HTTP_500_INTERNAL_SERVER_ERROR, error_msg)
 
+        if len(members) > per_page:
+            members = members[:per_page]
+            has_next_page = True
+        else:
+            has_next_page = False
+
         group_members_info = []
         for m in members:
             member_info = get_group_member_info(request, group_id, m.user_name, avatar_size)
@@ -65,9 +80,12 @@ class AdminGroupMembers(APIView):
         group_members = {
             'group_id': group_id,
             'group_name': group.group_name,
-            'members': group_members_info
+            'members': group_members_info,
+            'page_info': {
+                'has_next_page': has_next_page,
+                'current_page': page
+            }
         }
-
         return Response(group_members)
 
     def post(self, request, group_id):
diff --git a/seahub/api2/endpoints/group_members.py b/seahub/api2/endpoints/group_members.py
index 7be9b80236..8f364001c5 100644
--- a/seahub/api2/endpoints/group_members.py
+++ b/seahub/api2/endpoints/group_members.py
@@ -45,13 +45,23 @@ class GroupMembers(APIView):
         except ValueError:
             avatar_size = AVATAR_DEFAULT_SIZE
 
+        try:
+            page = int(request.GET.get('page', '1'))
+            per_page = int(request.GET.get('per_page', '100'))
+        except ValueError:
+            page = 1
+            per_page = 100
+
+        start = (page - 1) * per_page
+        limit = per_page
+
         try:
             # only group member can get info of all group members
             if not is_group_member(group_id, request.user.username):
                 error_msg = 'Permission denied.'
                 return api_error(status.HTTP_403_FORBIDDEN, error_msg)
 
-            members = ccnet_api.get_group_members(group_id)
+            members = ccnet_api.get_group_members(group_id, start, limit)
 
         except SearpcError as e:
             logger.error(e)