diff --git a/client/client.go b/client/client.go
index 9047401a2f3..480b61dbfc4 100644
--- a/client/client.go
+++ b/client/client.go
@@ -206,15 +206,18 @@ func (c *client) updateURLs(members []*pdpb.Member) {
 	for _, url := range urls {
 		urlsMap[url] = struct{}{}
 	}
-	needUpdate := false
+	containsOldURLs := true
 	for _, url := range c.urls {
 		if _, ok := urlsMap[url]; !ok {
-			needUpdate = true
+			containsOldURLs = false
 		}
 	}
-	if !needUpdate {
+
+	// the url list is same.
+	if len(urls) == len(c.urls) && containsOldURLs {
 		return
 	}
+
 	log.Info("[pd] update member urls", zap.Strings("old-urls", c.urls), zap.Strings("new-urls", urls))
 	c.urls = urls
 }
diff --git a/client/client_test.go b/client/client_test.go
index 580f5c48f8a..5d5113d6bfc 100644
--- a/client/client_test.go
+++ b/client/client_test.go
@@ -500,6 +500,7 @@ func (s *testClientDialOptionSuite) TestGRPCDialOption(c *C) {
 	start := time.Now()
 	ctx, cancel := context.WithTimeout(context.TODO(), 100*time.Millisecond)
 	defer cancel()
+	// nolint
 	_, err := NewClientWithContext(ctx, []string{"localhost:8080"}, SecurityOption{}, WithGRPCDialOptions(grpc.WithBlock(), grpc.WithTimeout(time.Second)))
 	c.Assert(err, NotNil)
 	c.Assert(time.Since(start), Greater, 800*time.Millisecond)