diff --git a/modules/wtask/api_exchange.go b/modules/wtask/api_exchange.go
index 9712f53c2..d86cc33bc 100644
--- a/modules/wtask/api_exchange.go
+++ b/modules/wtask/api_exchange.go
@@ -58,6 +58,16 @@ func (this *apiComp) Exchange(session comm.IUserSession, req *pb.WTaskExchangeRe
 		return
 	}
 	info.Exchange[req.Eid]++
+	if err = this.module.modelwtask.Change(session.GetUserId(), map[string]interface{}{
+		"exchange": info.Exchange,
+	}); err != nil {
+		errdata = &pb.ErrorData{
+			Code:    pb.ErrorCode_DBError,
+			Title:   pb.ErrorCode_DBError.ToString(),
+			Message: err.Error(),
+		}
+		return
+	}
 	session.SendMsg(string(this.module.GetType()), "exchange", &pb.WTaskExchangeReq{Eid: req.Eid})
 	return
 }