diff --git a/internal/rpc/group/group.go b/internal/rpc/group/group.go
index 2cd5ed4d8..40255d071 100644
--- a/internal/rpc/group/group.go
+++ b/internal/rpc/group/group.go
@@ -746,6 +746,7 @@ func (s *groupServer) GetGroups(_ context.Context, req *pbGroup.GetGroupsReq) (*
 				OwnerUserID:   v.CreatorUserID,
 				Status:        v.Status,
 				CreatorUserID: v.CreatorUserID,
+				CreateTime:    uint32(v.CreateTime.Unix()),
 			},
 			GroupMasterId: groupMember.UserID,
 			GroupMasterName: groupMember.Nickname,
diff --git a/pkg/call_back_struct/common.go b/pkg/call_back_struct/common.go
new file mode 100644
index 000000000..90b77eda8
--- /dev/null
+++ b/pkg/call_back_struct/common.go
@@ -0,0 +1 @@
+package call_back_struct
diff --git a/pkg/call_back_struct/message.go b/pkg/call_back_struct/message.go
new file mode 100644
index 000000000..90b77eda8
--- /dev/null
+++ b/pkg/call_back_struct/message.go
@@ -0,0 +1 @@
+package call_back_struct