diff --git a/students.html b/students.html
index e0674a0..a237695 100644
--- a/students.html
+++ b/students.html
@@ -15,15 +15,23 @@
     button {
       font-size: 2rem;
       padding: 1rem 2rem;
+	margin-bottom: 1rem;
     }
     #result {
       font-size: 2rem;
       margin-top: 1rem;
     }
+    input {
+      font-size: 2rem;
+      width: 100px;
+      text-align: center;
+      margin-bottom: 1rem;
+    }
   </style>
 </head>
 <body>
-  <button onclick="document.getElementById('result').innerText = students[Math.floor(Math.random() * students.length)]">
+  <input type="number" id="count" value="1" min="1">
+  <button onclick="selectStudents()">
     点名
   </button>
   <p id="result"></p>
@@ -131,7 +139,7 @@
 "邹书承",
 "吴永聪",
 "肖淇",
-"徐泓昊",
+"23336017",
 "薛炜鹏",
 "张周骁",
 "周子健",
@@ -154,6 +162,30 @@
 "卢晓玲",
 "吕振宁",
 "郭靖宇"];
+	const input=document.getElementById('count');
+	input.max=students.length;
+  function selectStudents(){
+	if(students.length<=0)
+	{
+		alert("请上传学生名单");
+		return ;
+	}
+  let num=parseInt(input.value);
+	if(num>students.length)
+	{
+		alert("人数超出上限");
+		return;
+	}
+    num=Math.max(1,Math.min(num,students.length));
+    const temp=[...students];
+    const selected=[];
+    for (let i=0;i<num;i++){
+        const randomIndex=Math.floor(Math.random()*temp.length);
+        selected.push(temp.splice(randomIndex,1)[0]);
+      }
+    const resultElement=document.getElementById('result');
+    resultElement.innerText=selected.join(', ');
+  }
   </script>
 </body>
 </html>
