diff --git a/seahub/api2/endpoints/admin/org_groups.py b/seahub/api2/endpoints/admin/org_groups.py
index 8ca8cfd29c..583eec23dc 100644
--- a/seahub/api2/endpoints/admin/org_groups.py
+++ b/seahub/api2/endpoints/admin/org_groups.py
@@ -12,7 +12,9 @@ from seahub.api2.authentication import TokenAuthentication
 from seahub.api2.throttling import UserRateThrottle
 from seahub.api2.utils import api_error
 from seahub.api2.permissions import IsProVersion
+from seahub.utils import is_pro_version
 from seahub.utils.timeutils import timestamp_to_isoformat_timestr
+from seahub.base.templatetags.seahub_tags import email2nickname, email2contact_email
 
 try:
     from seahub.settings import ORG_MEMBER_QUOTA_ENABLED
@@ -22,16 +24,6 @@ except ImportError:
 logger = logging.getLogger(__name__)
 
 
-def get_org_group_info(group):
-    group_info = {}
-    group_info['group_name'] = group.group_name
-    group_info['creator_name'] = group.creator_name
-    group_info['created_at'] = timestamp_to_isoformat_timestr(group.timestamp)
-    group_info['group_id'] = group.id
-
-    return group_info
-
-
 class AdminOrgGroups(APIView):
 
     authentication_classes = (TokenAuthentication, SessionAuthentication)
@@ -61,8 +53,27 @@ class AdminOrgGroups(APIView):
             error_msg = "Internal Server Error"
             return api_error(status.HTTP_500_INTERNAL_SERVER_ERROR, error_msg)
 
+        # Use dict to reduce memcache fetch cost in large for-loop.
+        nickname_dict = {}
+        contact_email_dict = {}
+        creator_name_set = set([g.creator_name for g in groups])
+        for e in creator_name_set:
+            if e not in nickname_dict:
+                nickname_dict[e] = email2nickname(e)
+            if e not in contact_email_dict:
+                contact_email_dict[e] = email2contact_email(e)
+
         groups_info = []
         for group in groups:
-            groups_info.append(get_org_group_info(group))
+            group_info = {}
+            group_info['group_name'] = group.group_name
+            group_info['creator_email'] = group.creator_name
+            group_info['creator_name'] = nickname_dict.get(group.creator_name, '')
+            group_info['creator_contact_email'] = contact_email_dict.get(group.creator_name, '')
+            group_info['created_at'] = timestamp_to_isoformat_timestr(group.timestamp)
+            group_info['parent_group_id'] = group.parent_group_id if is_pro_version() else 0
+            group_info['group_id'] = group.id
+
+            groups_info.append(group_info)
 
         return Response({'group_list': groups_info})
diff --git a/seahub/api2/endpoints/admin/org_repos.py b/seahub/api2/endpoints/admin/org_repos.py
index c181e4a8cb..84112d57eb 100644
--- a/seahub/api2/endpoints/admin/org_repos.py
+++ b/seahub/api2/endpoints/admin/org_repos.py
@@ -22,15 +22,6 @@ except ImportError:
 logger = logging.getLogger(__name__)
 
 
-def get_org_repo_info(repo):
-    repo_info = {}
-    repo_info['repo_name'] = repo.repo_name
-    repo_info['owner_email'] = seafile_api.get_org_repo_owner(repo.id)
-    repo_info['repo_id'] = repo.id
-
-    return repo_info
-
-
 class AdminOrgRepos(APIView):
 
     authentication_classes = (TokenAuthentication, SessionAuthentication)
@@ -60,8 +51,27 @@ class AdminOrgRepos(APIView):
             error_msg = "Internal Server Error"
             return api_error(status.HTTP_500_INTERNAL_SERVER_ERROR, error_msg)
 
+        # Use dict to reduce memcache fetch cost in large for-loop.
+        repo_id_2_email_dict = {repo.id: seafile_api.get_org_repo_owner(repo.id) for repo in repos}
+        owner_email_set = set(repo_id_2_email_dict.values())
+        nickname_dict = {}
+        contact_email_dict = {}
+        for e in owner_email_set:
+            if e not in nickname_dict:
+                nickname_dict[e] = email2nickname(e)
+            if e not in contact_email_dict:
+                contact_email_dict[e] = email2contact_email(e)
+
         repos_info = []
         for repo in repos:
-            repos_info.append(get_org_repo_info(repo))
+            repo_info = {}
+            repo_info['repo_name'] = repo.repo_name
+            owner_email = repo_id_2_email_dict.get(repo.id, '')
+            repo_info['owner_email'] = owner_email
+            repo_info['owner_name'] = nickname_dict.get(owner_email, '')
+            repo_info['owner_contact_email'] = contact_email_dict.get(owner_email, '')
+            repo_info['repo_id'] = repo.id
+
+            repos_info.append(repo_info)
 
         return Response({'repo_list': repos_info})