diff --git a/src/modules/tpm/challengesnew/tpm-md-editor.js b/src/modules/tpm/challengesnew/tpm-md-editor.js
index af89ed0b2..6e00285cc 100644
--- a/src/modules/tpm/challengesnew/tpm-md-editor.js
+++ b/src/modules/tpm/challengesnew/tpm-md-editor.js
@@ -495,18 +495,18 @@ export default ({ mdID, onChange, onCMBeforeChange, onCMBlur, error = false, cla
       });
       editorInstance.cm.on("change", (cm) => {
         //调用父组件的onchange方法，将输入内容传入父级组件
-        // let reg = /alert\((.*?)\)/g;
+        let reg = /alert\((.*?)\)/g;
         let v = cm.getValue();
-        // if(v){
-        //   let matchvalue = v.match(reg);
-        //   if(matchvalue && matchvalue.length>0){
-        //     for(var x=0;x<matchvalue.length;x++){
-        //       v = v.replace(matchvalue[x],"");
-        //     }
-        //   }
-        // }
+        if(v){
+          let matchvalue = v.match(reg);
+          if(matchvalue && matchvalue.length>0){
+            for(var x=0;x<matchvalue.length;x++){
+              v = v.replace(matchvalue[x],"");
+            }
+          }
+        }
         // xss()防止恶意代码：如alert等
-        onChange && onChange(xss(v));
+        onChange && onChange(v);
         if(quoteVisibleRef.current){
           const cur = cm.doc.getCursor();
           const line = cur.line;