diff --git a/center/router/router_proxy.go b/center/router/router_proxy.go
index 2ec009f3623018b920be44027d5218ac74ef1434..ab4b60425aa2754f513abc5eae53e08382e1443d 100644
--- a/center/router/router_proxy.go
+++ b/center/router/router_proxy.go
@@ -15,6 +15,7 @@ import (
 	"github.com/gin-gonic/gin"
 	"github.com/prometheus/common/model"
 	"github.com/toolkits/pkg/ginx"
+	"github.com/toolkits/pkg/logger"
 )
 
 type queryFormItem struct {
@@ -32,10 +33,14 @@ type batchQueryForm struct {
 func (rt *Router) promBatchQueryRange(c *gin.Context) {
 	var f batchQueryForm
 	ginx.Dangerous(c.BindJSON(&f))
+	var lst []model.Value
 
 	cli := rt.PromClients.GetCli(f.DatasourceId)
-
-	var lst []model.Value
+	if cli == nil {
+		logger.Warningf("no such datasource id: %d", f.DatasourceId)
+		ginx.NewRender(c).Data(lst, nil)
+		return
+	}
 
 	for _, item := range f.Queries {
 		r := pkgprom.Range{
@@ -67,10 +72,15 @@ func (rt *Router) promBatchQueryInstant(c *gin.Context) {
 	var f batchInstantForm
 	ginx.Dangerous(c.BindJSON(&f))
 
-	cli := rt.PromClients.GetCli(f.DatasourceId)
-
 	var lst []model.Value
 
+	cli := rt.PromClients.GetCli(f.DatasourceId)
+	if cli == nil {
+		logger.Warningf("no such datasource id: %d", f.DatasourceId)
+		ginx.NewRender(c).Data(lst, nil)
+		return
+	}
+
 	for _, item := range f.Queries {
 		resp, _, err := cli.Query(context.Background(), item.Query, time.Unix(item.Time, 0))
 		ginx.Dangerous(err)