diff --git a/src/widget/numberinterval/singleeditor/single.editor.js b/src/widget/numberinterval/singleeditor/single.editor.js
index 4ef6666ef..031e2cec4 100644
--- a/src/widget/numberinterval/singleeditor/single.editor.js
+++ b/src/widget/numberinterval/singleeditor/single.editor.js
@@ -1,5 +1,6 @@
 BI.NumberIntervalSingleEidtor = BI.inherit(BI.Single, {
     props: {
+        baseCls: "bi-number-interval-single-editor",
         tipType: "success",
         title: ""
     },