diff --git a/pkg/query-service/druidQuery/mysql-query.go b/pkg/query-service/druidQuery/mysql-query.go
index 07fd7ed251..c262f39002 100644
--- a/pkg/query-service/druidQuery/mysql-query.go
+++ b/pkg/query-service/druidQuery/mysql-query.go
@@ -517,7 +517,7 @@ func GetServices(client *SqlClient, query *model.GetServicesParams) (*[]model.Se
 
 func GetServiceMapDependencies(client *SqlClient, query *model.GetServicesParams) (*[]model.ServiceMapDependencyResponseItem, error) {
 
-	sqlQuery := fmt.Sprintf(`SELECT SpanId, ParentSpanId, ServiceName FROM %s WHERE "__time" >= '%s' AND "__time" <= '%s' ORDER BY __time DESC`, constants.DruidDatasource, query.StartTime, query.EndTime)
+	sqlQuery := fmt.Sprintf(`SELECT SpanId, ParentSpanId, ServiceName FROM %s WHERE "__time" >= '%s' AND "__time" <= '%s' ORDER BY __time DESC LIMIT 100000`, constants.DruidDatasource, query.StartTime, query.EndTime)
 
 	// zap.S().Debug(sqlQuery)