diff --git a/group/views.py b/group/views.py
index c37c1b0527..21dfbbea9b 100644
--- a/group/views.py
+++ b/group/views.py
@@ -6,7 +6,7 @@ from django.template import RequestContext
 
 from auth.decorators import login_required
 from seaserv import ccnet_rpc, seafserv_threaded_rpc, get_repo, \
-    get_group_repoids
+    get_group_repoids, check_group_staff
 from pysearpc import SearpcError
 
 from seahub.contacts.models import Contact
@@ -53,8 +53,7 @@ def group_remove(request, group_id):
     except ValueError:
         return HttpResponseRedirect(reverse('group_list', args=[]))
 
-    # Check whether use is the group staff
-    if not ccnet_rpc.check_group_staff(group_id_int, request.user.username):
+    if not check_group_staff(group_id_int, request.user):
         return go_permission_error(request, u'只有小组管理员有权解散小组')
     
     try:
@@ -100,7 +99,7 @@ def group_info(request, group_id):
     if not group:
         return HttpResponseRedirect(reverse('group_list', args=[]))
 
-    if ccnet_rpc.check_group_staff(group.props.id, request.user.username):
+    if check_group_staff(group.id, request.user):
         is_staff = True
     else:
         is_staff = False
@@ -146,8 +145,7 @@ def group_members(request, group_id):
     except ValueError:
         return go_error(request, u'group id 不是有效参数')        
 
-    # Check whether user is the group staff
-    if not ccnet_rpc.check_group_staff(group_id_int, request.user.username):
+    if not check_group_staff(group_id_int, request.user):
         return go_permission_error(request, u'只有小组管理员有权管理小组')
 
     group = ccnet_rpc.get_group(group_id_int)
@@ -207,8 +205,7 @@ def group_remove_member(request, group_id, user_name):
     except ValueError:
         return go_error(request, u'group id 不是有效参数')        
     
-    # Check whether user is the group staff
-    if not ccnet_rpc.check_group_staff(group_id_int, request.user.username):
+    if not check_group_staff(group_id_int, request.user):
         return go_permission_error(request, u'只有小组管理员有权删除成员')
     
     if not validate_emailuser(user_name):
@@ -270,7 +267,7 @@ def group_unshare_repo(request, repo_id, group_id, from_email):
         return go_error(request, u'共享失败:未加入该小组')
 
     # Check whether user is group staff or the one share the repo
-    if not ccnet_rpc.check_group_staff(group_id, from_email) and \
+    if not check_group_staff(group_id, from_email) and \
             seafserv_threaded_rpc.get_group_repo_share_from(repo_id) != from_email:
         return go_permission_error(request, u'取消共享失败:只有小组管理员或共享目录发布者有权取消共享')
         
diff --git a/thirdpart/seaserv/__init__.py b/thirdpart/seaserv/__init__.py
index 9feab701ad..09286a28eb 100644
--- a/thirdpart/seaserv/__init__.py
+++ b/thirdpart/seaserv/__init__.py
@@ -12,7 +12,7 @@ from service import get_users, get_user, get_events, count_event
 from service import get_repos, get_repo, get_commits, get_branches
 from service import get_binding_peerids
 from service import get_ccnetuser
-from service import get_group_repoids
+from service import get_group_repoids, check_group_staff
 
 from service import CCNET_CONF_PATH
 
diff --git a/thirdpart/seaserv/service.py b/thirdpart/seaserv/service.py
index a199f019d3..2455f327ab 100644
--- a/thirdpart/seaserv/service.py
+++ b/thirdpart/seaserv/service.py
@@ -412,4 +412,10 @@ def get_group_repoids(group_id=None):
         repoid_list.append(repo_id)
     return repoid_list
 
-    
+def check_group_staff(group_id_int, user_or_username):
+    """Check where user is group staff"""
+    from seahub.base.accounts import CcnetUser
+    if isinstance(user_or_username, CcnetUser):
+        user_or_username = user_or_username.username
+        
+    return ccnet_rpc.check_group_staff(group_id_int, user_or_username)
diff --git a/views.py b/views.py
index ac7f8f9c27..33ca2160e2 100644
--- a/views.py
+++ b/views.py
@@ -16,7 +16,7 @@ from auth.tokens import default_token_generator
 from seaserv import ccnet_rpc, get_groups, get_users, get_repos, \
     get_repo, get_commits, get_branches, \
     seafserv_threaded_rpc, seafserv_rpc, get_binding_peerids, get_ccnetuser, \
-    get_group_repoids
+    get_group_repoids, check_group_staff
 from pysearpc import SearpcError
 
 from seahub.base.accounts import CcnetUser
@@ -656,13 +656,14 @@ def repo_remove_share(request):
             return go_permission_error(request, u'取消共享失败')
         seafserv_threaded_rpc.remove_share(repo_id, from_email, to_email)
     else:
-        if not request.user.is_staff and request.user.username != from_email:
-            return go_permission_error(request, u'取消共享失败')
         try:
             group_id_int = int(group_id)
         except:
             return go_error(request, u'group id 不是有效参数')
-        
+
+        if not check_group_staff(group_id_int, request.user) \
+                and request.user.username != from_email: 
+            return go_permission_error(request, u'取消共享失败')        
         from seahub.group.views import group_unshare_repo
         group_unshare_repo(request, repo_id, group_id_int, from_email)