diff --git a/index.js b/index.js
index 2afd057..54330b0 100644
--- a/index.js
+++ b/index.js
@@ -35,7 +35,7 @@ document.getElementById('excelFileInput').addEventListener('change', function (e
 
 // 点名按钮
 document.getElementById('callButton').addEventListener('click', function () {
-    // 去除上一次的高亮
+    // 去除上一次的高亮学生
     var displayDiv = document.getElementById('excelDataDisplay');
     Array.from(displayDiv.children).forEach(child => child.style.backgroundColor = '');