diff --git a/packages/core/src/config/index.js b/packages/core/src/config/index.js
index e0be0d7..ddb7438 100644
--- a/packages/core/src/config/index.js
+++ b/packages/core/src/config/index.js
@@ -44,6 +44,8 @@ module.exports = {
     setting: {
       NODE_TLS_REJECT_UNAUTHORIZED: true,
       verifySsl: true,
+      timeout: 20000, // 代理请求超时时间
+      keepAliveTimeout: 30000, // socket连接的超时时间
       script: {
         enabled: true,
         defaultDir: './extra/scripts/'
diff --git a/packages/gui/src/view/pages/server.vue b/packages/gui/src/view/pages/server.vue
index d7f5a83..47062aa 100644
--- a/packages/gui/src/view/pages/server.vue
+++ b/packages/gui/src/view/pages/server.vue
@@ -36,6 +36,14 @@
               <a-input-number v-model="config.server.port" :min="0" :max="65535"/>
               <div class="form-help">修改后需要重启应用</div>
             </a-form-item>
+            <hr/>
+            <a-form-item label="请求超时时间" :label-col="labelCol" :wrapper-col="wrapperCol">
+              <a-input-number v-model="config.server.setting.timeout" :step="1000" :min="1000"/> ms，对应 timeout 属性
+            </a-form-item>
+            <a-form-item label="连接超时时间" :label-col="labelCol" :wrapper-col="wrapperCol">
+              <a-input-number v-model="config.server.setting.keepAliveTimeout" :step="1000" :min="1000"/> ms，对应 keepAliveTimeout 属性
+            </a-form-item>
+            <hr/>
             <a-form-item label="全局校验SSL" :label-col="labelCol" :wrapper-col="wrapperCol">
               <a-checkbox v-model="config.server.setting.NODE_TLS_REJECT_UNAUTHORIZED">
                 NODE_TLS_REJECT_UNAUTHORIZED
@@ -54,6 +62,7 @@
               <a-input-search addon-before="Key" enter-button="选择" @search="onKeySelect"
                               v-model="config.server.setting.rootCaFile.keyPath"/>
             </a-form-item>
+            <hr/>
             <a-form-item label="启用拦截" :label-col="labelCol" :wrapper-col="wrapperCol">
                 <a-checkbox v-model="config.server.intercept.enabled">
                   启用拦截
@@ -136,8 +145,7 @@
               </a-checkbox>
             </a-form-item>
             <a-form-item label="自动测试间隔" :label-col="labelCol" :wrapper-col="wrapperCol">
-              <a-input-number id="inputNumber" v-model="getSpeedTestConfig().interval" :step="1000" :min="1"/>
-              ms
+              <a-input-number id="inputNumber" v-model="getSpeedTestConfig().interval" :step="1000" :min="1"/> ms
             </a-form-item>
             <div>使用以下dns获取ip进行测速</div>
             <a-row style="margin-top:10px">
diff --git a/packages/mitmproxy/src/lib/proxy/common/util.js b/packages/mitmproxy/src/lib/proxy/common/util.js
index 0dd89c8..f5e2198 100644
--- a/packages/mitmproxy/src/lib/proxy/common/util.js
+++ b/packages/mitmproxy/src/lib/proxy/common/util.js
@@ -15,10 +15,50 @@ const httpAgent = new Agent({
   timeout: 20000,
   keepAliveTimeout: 30000 // free socket keepalive for 30 seconds
 })
+const httpsAgentCache = {}
+const httpAgentCache = {}
+
 let socketId = 0
 
 let httpsOverHttpAgent, httpOverHttpsAgent, httpsOverHttpsAgent
 
+function createHttpsAgent (serverSetting) {
+  const key = (serverSetting.timeout || 20000) + '-' + (serverSetting.keepAliveTimeout || 30000)
+  if (!httpsAgentCache[key]) {
+    httpsAgentCache[key] = new HttpsAgent({
+      keepAlive: true,
+      timeout: serverSetting.timeout || 20000,
+      keepAliveTimeout: serverSetting.keepAliveTimeout || 30000,
+      rejectUnauthorized: false
+    })
+  }
+  return httpsAgentCache[key]
+}
+
+function createHttpAgent (serverSetting) {
+  const key = (serverSetting.timeout || 20000) + '-' + (serverSetting.keepAliveTimeout || 30000)
+  if (!httpAgentCache[key]) {
+    httpAgentCache[key] = new Agent({
+      keepAlive: true,
+      timeout: serverSetting.timeout || 20000,
+      keepAliveTimeout: serverSetting.keepAliveTimeout || 30000
+    })
+  }
+  return httpAgentCache[key]
+}
+
+function createAgent (protocol, serverSetting) {
+  if (protocol === 'https:') {
+    return !serverSetting || (serverSetting.timeout === 20000 && serverSetting.keepAliveTimeout === 30000)
+      ? httpsAgent
+      : createHttpsAgent(serverSetting)
+  } else {
+    return !serverSetting || (serverSetting.timeout === 20000 && serverSetting.keepAliveTimeout === 30000)
+      ? httpAgent
+      : createHttpAgent(serverSetting)
+  }
+}
+
 util.parseHostnameAndPort = (host, defaultPort) => {
   let arr = host.match(/^(\[[^\]]+\])(?::(\d+))?$/) // 尝试解析IPv6
   if (arr) {
@@ -42,7 +82,7 @@ util.parseHostnameAndPort = (host, defaultPort) => {
   return arr
 }
 
-util.getOptionsFromRequest = (req, ssl, externalProxy = null) => {
+util.getOptionsFromRequest = (req, ssl, externalProxy = null, serverSetting) => {
   // eslint-disable-next-line node/no-deprecated-api
   const urlObject = url.parse(req.url)
   const defaultPort = ssl ? 443 : 80
@@ -67,11 +107,7 @@ util.getOptionsFromRequest = (req, ssl, externalProxy = null) => {
   if (!externalProxyUrl) {
     // keepAlive
     if (headers.connection !== 'close') {
-      if (protocol === 'https:') {
-        agent = httpsAgent
-      } else {
-        agent = httpAgent
-      }
+      agent = createAgent(protocol, serverSetting)
       headers.connection = 'keep-alive'
     } else {
       agent = false
diff --git a/packages/mitmproxy/src/lib/proxy/mitmproxy/createRequestHandler.js b/packages/mitmproxy/src/lib/proxy/mitmproxy/createRequestHandler.js
index 98e1bc1..1ee5edc 100644
--- a/packages/mitmproxy/src/lib/proxy/mitmproxy/createRequestHandler.js
+++ b/packages/mitmproxy/src/lib/proxy/mitmproxy/createRequestHandler.js
@@ -15,7 +15,7 @@ module.exports = function createRequestHandler (createIntercepts, middlewares, e
   return function requestHandler (req, res, ssl) {
     let proxyReq
 
-    const rOptions = commonUtil.getOptionsFromRequest(req, ssl, externalProxy)
+    const rOptions = commonUtil.getOptionsFromRequest(req, ssl, externalProxy, setting)
 
     if (rOptions.agent) {
       rOptions.agent.options.rejectUnauthorized = setting.verifySsl