diff --git a/packages/editor-setters/src/function-setter/index.tsx b/packages/editor-setters/src/function-setter/index.tsx
index 0e5954a8d..c2541051d 100644
--- a/packages/editor-setters/src/function-setter/index.tsx
+++ b/packages/editor-setters/src/function-setter/index.tsx
@@ -62,7 +62,8 @@ export default class FunctionSetter extends PureComponent<FunctionSetterProps, {
   parseFunctionName = (functionString: String) => {
     // 因为函数格式是固定的，所以可以按照字符换去匹配获取函数名
     let funNameStr = functionString.split('.')[1];
-    let endIndex = functionString.indexOf('(');
+    let endIndex = funNameStr.indexOf('(');
+    
     return funNameStr.substr(0, endIndex);
 
   }