diff --git a/src/widget/numberinterval/numberinterval.js b/src/widget/numberinterval/numberinterval.js
index 30af17b4d..b0b5579b5 100644
--- a/src/widget/numberinterval/numberinterval.js
+++ b/src/widget/numberinterval/numberinterval.js
@@ -529,6 +529,14 @@ BI.NumberInterval = BI.inherit(BI.Single, {
         return value;
     },
 
+    focusMinEditor: function () {
+        this.smallEditor.focus();
+    },
+
+    focusMaxEditor: function () {
+        this.bigEditor.focus();
+    },
+
     destroyed: function () {
         var c = this.constants;
         BI.Bubbles.remove(c.typeError);
diff --git a/src/widget/numberinterval/singleeditor/single.editor.js b/src/widget/numberinterval/singleeditor/single.editor.js
index 01dbe0c3a..386c19bdc 100644
--- a/src/widget/numberinterval/singleeditor/single.editor.js
+++ b/src/widget/numberinterval/singleeditor/single.editor.js
@@ -71,6 +71,10 @@ BI.NumberIntervalSingleEidtor = BI.inherit(BI.Single, {
 
     setValue: function (v) {
         return this.editor.setValue(v);
+    },
+
+    focus: function () {
+        this.editor.focus();
     }
 });
 
diff --git a/typescript/widget/numberinterval/numberinterval.ts b/typescript/widget/numberinterval/numberinterval.ts
index 5a8fe6b88..ea51b9550 100644
--- a/typescript/widget/numberinterval/numberinterval.ts
+++ b/typescript/widget/numberinterval/numberinterval.ts
@@ -35,4 +35,8 @@ export declare class NumberInterval extends Single {
     setNumTip(v: string): void;
 
     getNumTip(): void;
+
+    focusMinEditor(): void;
+
+    focusMaxEditor(): void;
 }