diff --git a/src/base/combination/tab.js b/src/base/combination/tab.js
index 1aa075870..664b0c09a 100644
--- a/src/base/combination/tab.js
+++ b/src/base/combination/tab.js
@@ -104,6 +104,10 @@ BI.Tab = BI.inherit(BI.Widget, {
         });
     },
 
+    isCardExisted: function (cardName) {
+        return this.layout.isCardExisted(cardName);
+    },
+
     getSelect: function () {
         return this.curr;
     },
diff --git a/typescript/base/combination/tab.ts b/typescript/base/combination/tab.ts
index 6d521772c..a1700f265 100644
--- a/typescript/base/combination/tab.ts
+++ b/typescript/base/combination/tab.ts
@@ -28,4 +28,6 @@ export declare class Tab extends Widget {
     getTab<T>(v: string | number): T;
 
     populate(): void;
+
+    isCardExisted(): boolean;
 }