diff --git a/index.js b/index.js
index 1f24ea1..bb6c039 100644
--- a/index.js
+++ b/index.js
@@ -1,4 +1,5 @@
 import http from 'http';
+import sse from './module/sse.js';
 
 const server = http.createServer(async (req, res) => {
     // 设置 CORS 头
@@ -14,41 +15,12 @@ const server = http.createServer(async (req, res) => {
     }
 
     if (req.url === '/events') {
-        // 设置响应头
-        res.writeHead(200, {
-            'Content-Type': 'text/event-stream',
-            'Cache-Control': 'no-cache',
-            Connection: 'keep-alive',
-        });
-
-        // 发送事件
-        const sendEvent = (msg) => {
-            return new Promise((resolve) => {
-                setTimeout(() => {
-                    const data = `data: ${msg ? msg : new Date().toLocaleTimeString()}\n\n`;
-                    res.write(data);
-                    resolve();
-                }, 100);
-            });
-        };
-
-        // 每秒发送一次消息
-        await sendEvent('Start');
-        for (let i = 0; i < 200; i++) {
-            await sendEvent();
-        }
-        await sendEvent('End');
-        res.end();
-
-        // 清理连接
-        req.on('close', () => {
-            console.log('Client disconnected');
-            res.end();
-        });
-    } else {
-        res.writeHead(404);
-        res.end();
+        sse(req, res);
+        return;
     }
+
+    res.writeHead(404);
+    res.end();
 });
 
 // 监听端口
diff --git a/module/sse.js b/module/sse.js
index 2433376..63bdcc2 100644
--- a/module/sse.js
+++ b/module/sse.js
@@ -1 +1,33 @@
-function sse(req, res) {}
+export default async function (req, res) {
+    // 设置响应头
+    res.writeHead(200, {
+        'Content-Type': 'text/event-stream',
+        'Cache-Control': 'no-cache',
+        Connection: 'keep-alive',
+    });
+
+    // 发送事件
+    const sendEvent = (msg) => {
+        return new Promise((resolve) => {
+            setTimeout(() => {
+                const data = `data: ${msg ? msg : new Date().toLocaleTimeString()}\n\n`;
+                res.write(data);
+                resolve();
+            }, 100);
+        });
+    };
+
+    // 每秒发送一次消息
+    await sendEvent('Start');
+    for (let i = 0; i < 200; i++) {
+        await sendEvent();
+    }
+    await sendEvent('End');
+    res.end();
+
+    // 清理连接
+    req.on('close', () => {
+        console.log('Client disconnected');
+        res.end();
+    });
+}