diff --git a/index.ts b/index.ts
index 9a43aac..4505977 100644
--- a/index.ts
+++ b/index.ts
@@ -65,7 +65,7 @@ router.get('/ask/stream', async (ctx) => {
 app.use(router.routes());
 
 (async () => {
-    await freeBrowserPool.init(1, process.env.DEBUG === '1');
+    await freeBrowserPool.init(5, process.env.DEBUG === '1');
     const server = app.listen(3000, () => {
         console.log("Now listening: 127.0.0.1:3000");
     });
diff --git a/model/forefront/index.ts b/model/forefront/index.ts
index e1acd0f..19449f9 100644
--- a/model/forefront/index.ts
+++ b/model/forefront/index.ts
@@ -10,6 +10,7 @@ export class Forefrontnew extends Chat {
     private page: Page | undefined = undefined;
     private url: string = 'https://chat.forefront.ai/';
     private writing: NodeJS.Timer | undefined = undefined;
+    private msgSize: number = 0;
 
     constructor(options?: ChatOptions) {
         super(options);
@@ -37,6 +38,13 @@ export class Forefrontnew extends Chat {
             pt.end();
             return {text: pt}
         }
+        if (this.msgSize === 2) {
+            await freeBrowserPool.remove(this.browser?.id||"");
+            this.browser = undefined;
+            this.page = undefined;
+            this.msgSize = 0;
+        }
+        this.msgSize++;
         if (!this.browser) {
             this.browser = freeBrowserPool.getRandom();
         }
@@ -105,8 +113,7 @@ export class Forefrontnew extends Chat {
         const mdList = await this.page.$('#__next > .flex > .relative > .relative > .w-full:nth-child(1) > div');
         const md = mdList;
         // get latest markdown id
-        let id: number = (await md?.evaluate(el => el.children.length)) || 0
-        id = id * 4;
+        let id: number = this.msgSize * 4;
         const selector = `div > .w-full:nth-child(${id}) > .flex > .flex > .post-markdown`;
         await this.page.waitForSelector(selector);
         const result = await this.page.$(selector)
diff --git a/pool/puppeteer.ts b/pool/puppeteer.ts
index e6c25cf..f01cf11 100644
--- a/pool/puppeteer.ts
+++ b/pool/puppeteer.ts
@@ -2,6 +2,8 @@ import puppeteer, {Browser, Page, PuppeteerLaunchOptions} from "puppeteer";
 import fs from 'fs';
 import path from "path";
 import run from "node:test";
+import {randomUUID} from "crypto";
+import {v4} from "uuid";
 
 const runPath = path.join(__dirname, 'run');
 
@@ -10,7 +12,7 @@ export class FreeBrowser {
     private readonly options: PuppeteerLaunchOptions | undefined;
     private urls: Set<string> = new Set<string>();
     private pages: Record<string, Page> = {};
-    private readonly id: string;
+    public readonly id: string;
 
     constructor(id: string, options?: PuppeteerLaunchOptions) {
         this.options = {
@@ -38,37 +40,62 @@ export class FreeBrowser {
         this.pages[url] = page;
         return page;
     }
+
+    public async close() {
+        this.browser?.close();
+    }
 }
 
 
 class FreeBrowserPool {
     private size: number = 0;
     private readonly pool: FreeBrowser[];
+    private debug: boolean = false;
 
     constructor() {
         this.pool = [];
     }
 
-    public async init(size: number, debug: boolean) {
+    public async init(size: number,debug:boolean) {
+        this.debug = debug;
         console.log(`browser pool init size:${size}`)
         if (!fs.existsSync(runPath)) {
             fs.mkdirSync(runPath);
         }
         this.size = size;
-        const options: PuppeteerLaunchOptions = {
-            headless: !debug,
-            args: ['--no-sandbox']
-        };
         for (let i = 0; i < size; i++) {
-            const browser = new FreeBrowser(`${i}`, options);
-            await browser.init();
-            this.pool.push(browser);
+            this.pool.push(await this.newBrowser());
         }
     }
 
     public getRandom(): FreeBrowser {
         return this.pool[Math.floor(Math.random() * this.pool.length)]
     }
+
+    private async newBrowser(): Promise<FreeBrowser> {
+        const options: PuppeteerLaunchOptions = {
+            headless: !this.debug,
+            args: ['--no-sandbox']
+        };
+        const browser = new FreeBrowser(v4(), options);
+        await browser.init();
+        return browser;
+    }
+
+    public async remove(id: string) {
+        let removed = false;
+        this.pool.filter(item => {
+            if (item.id === id) {
+                item.close();
+                removed = true;
+                return false;
+            }
+            return true;
+        })
+        if (removed) {
+            this.pool.push(await this.newBrowser());
+        }
+    }
 }
 
 export const freeBrowserPool = new FreeBrowserPool();