diff --git a/Readme.md b/Readme.md
index 037ee6f..e90c5ba 100644
--- a/Readme.md
+++ b/Readme.md
@@ -138,7 +138,7 @@ response.location('/foo')
 let html = fs.readFileSync('./index.html')
 response.render(html) // send from a html file.
 
-let txt = '<h1>hello doJS</h1>'
+let txt = '<h1>hello world</h1>'
 response.render(txt)
 
 response.render("You're not able to here", 401) 
@@ -189,3 +189,12 @@ response.send(200, 'success', { name: 'foo', age: 16 }, 'blabla')
 * data `<String>` | `<Buffer>` optional
 
 > 向客户端输出内容。
+
+
+### cookie(key, value, options)
+
+* key `<String>`
+* value `<String>` 
+* options `<Object>` 额外配置[可选]
+
+> 向客户端写入cookies。
\ No newline at end of file
diff --git a/index.js b/index.js
index 52d42f1..c95156c 100644
--- a/index.js
+++ b/index.js
@@ -5,6 +5,7 @@
 
 import fs from 'iofs'
 import STATUS_TEXT from './lib/http-code.js'
+import { serialize } from './lib/cookie.js'
 
 export default class Response {
   constructor(req, res) {
@@ -34,34 +35,6 @@ export default class Response {
     this.statusCode = code
   }
 
-  /**
-   * [append 往header插入信息]
-   * @param  {String} key [description]
-   * @param  {String} val [description]
-   */
-  append(key, val) {
-    if (this.rendered) {
-      return
-    }
-    var prev = this.get(key)
-    var value
-
-    if (Array.isArray(val)) {
-      value = val
-    } else {
-      value = [val]
-    }
-
-    if (prev) {
-      if (Array.isArray(prev)) {
-        value = prev.concat(val)
-      } else {
-        value = [prev].concat(val)
-      }
-    }
-    return this.set(key, value)
-  }
-
   /**
    * [redirect 页面跳转]
    * @param  {String} url [要跳转的URL]
@@ -148,8 +121,14 @@ export default class Response {
       return
     }
     if (typeof code !== 'number') {
-      msg = code + ''
-      code = 400
+      if (typeof code === 'object') {
+        data = code
+        code = 200
+        msg = STATUS_TEXT[code]
+      } else {
+        msg = code + ''
+        code = 400
+      }
     } else if (typeof msg === 'object') {
       data = msg
       code = code || 200
@@ -222,4 +201,62 @@ export default class Response {
     }
     return this
   }
+
+  /**
+   * [append 往header插入信息]
+   * @param  {String} key [description]
+   * @param  {String} val [description]
+   */
+  append(key, val) {
+    if (this.rendered) {
+      return
+    }
+    var prev = this.get(key)
+    var value
+
+    if (Array.isArray(val)) {
+      value = val
+    } else {
+      value = [val]
+    }
+
+    if (prev) {
+      if (Array.isArray(prev)) {
+        value = prev.concat(val)
+      } else {
+        value = [prev].concat(val)
+      }
+    }
+    return this.set(key, value)
+  }
+
+  /**
+   * [set 设置cookie]
+   * @param {[string]} key
+   * @param {[string/number]} val
+   * @param {[object]} opts [设置cookie的额外信息,如域,有效期等]
+   */
+  cookie(key, val, opts = {}) {
+    //读取之前已经写过的cookie缓存
+    var cache = this.get('set-cookie')
+    if (cache) {
+      if (!Array.isArray(cache)) {
+        cache = [cache]
+      }
+    } else {
+      cache = []
+    }
+
+    if (cache.length > 0) {
+      // 如果之前已经写了一个相同的cookie, 则删除之前的
+      cache = cache.filter(it => {
+        let _key = it.split('=')[0].trim()
+        return key !== _key
+      })
+    }
+
+    cache.push(serialize(key, val, opts))
+
+    this.set('set-cookie', cache)
+  }
 }
diff --git a/lib/cookie.js b/lib/cookie.js
new file mode 100644
index 0000000..9961225
--- /dev/null
+++ b/lib/cookie.js
@@ -0,0 +1,78 @@
+/**
+ * @author yutent<yutent.io@gmail.com>
+ * @date 2020/09/20 15:08:50
+ */
+
+var KEY_REGEXP = /^[\u0009\u0020-\u007e\u0080-\u00ff]+$/
+// var SPLIT_REGEXP = /; */
+var encode = encodeURIComponent
+// var decode = decodeURIComponent
+
+/**
+ * [serialize 序列化对象]
+ */
+export function serialize(key, val, opts) {
+  var pairs = []
+  if (!KEY_REGEXP.test(key)) {
+    return ''
+  }
+
+  val = encode(val)
+  opts = opts || {}
+
+  if (val && !KEY_REGEXP.test(val)) {
+    return ''
+  }
+
+  pairs.push(key + '=' + val)
+
+  if (opts.hasOwnProperty('expires') && opts.expires) {
+    // pairs.push('Expires=' + opts.expires.toUTCString())
+    // 有效期, 已不建议使用,改用 max-age
+    if (Date.isDate(opts.expires)) {
+      opts.maxAge = ~~(opts.expires.getTime() / 1000)
+    } else {
+      opts.maxAge = +opts.expires
+    }
+    delete opts.expires
+  }
+
+  if (opts.hasOwnProperty('maxAge') && opts.maxAge) {
+    //有效期
+    opts.maxAge = opts.maxAge
+    pairs.push('Max-Age=' + opts.maxAge)
+  }
+
+  if (opts.hasOwnProperty('domain')) {
+    //域
+    if (!KEY_REGEXP.test(opts.domain)) {
+      return ''
+    }
+    pairs.push('Domain=' + opts.domain)
+  }
+
+  if (opts.hasOwnProperty('path')) {
+    //目录
+    if (!KEY_REGEXP.test(opts.path)) {
+      return ''
+    }
+
+    pairs.push('Path=' + opts.path)
+  } else {
+    pairs.push('Path=/')
+  }
+
+  if (opts.httpOnly) {
+    pairs.push('HttpOnly')
+  }
+
+  if (opts.secure) {
+    pairs.push('Secure')
+  }
+
+  if (opts.firstPartyOnly) {
+    pairs.push('First-Party-Only')
+  }
+
+  return pairs.join('; ')
+}
diff --git a/package.json b/package.json
index 9fbf776..769b8fe 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@gm5/response",
-  "version": "1.2.0",
+  "version": "1.3.0",
   "type": "module",
   "description": "对Http的response进一步封装, 提供常用的API",
   "main": "index.js",