diff --git a/package.json b/package.json
index ea08754..09701a9 100644
--- a/package.json
+++ b/package.json
@@ -1,8 +1,8 @@
 {
   "name": "@bytedo/fetch",
-  "version": "2.1.6",
+  "version": "2.1.7",
   "description": "全新的ajax封装。分2个版本, 一个基于XMLHttpRequest, 一个基于window.fetch",
-  "main": "dist/index.js",
+  "main": "dist/next.js",
   "files": [
     "dist/*"
   ],
diff --git a/src/index.js b/src/index.js
index 20d2eee..63e9000 100644
--- a/src/index.js
+++ b/src/index.js
@@ -25,7 +25,7 @@ const ERRORS = {
 }
 
 Promise.defer = function () {
-  var _ = {}
+  let _ = {}
   _.promise = new Promise(function (y, n) {
     _.resolve = y
     _.reject = n
@@ -66,7 +66,7 @@ class _Request {
     }
 
     if (!options.signal) {
-      var control = new AbortController()
+      let control = new AbortController()
       options.signal = control.signal
     }
     this.defer.promise.abort = function () {
@@ -90,10 +90,10 @@ class _Request {
   }
 
   __next__() {
-    var options = this.options
-    var params = null
-    var hasAttach = false // 是否有附件
-    var noBody = NOBODY_METHODS.includes(options.method)
+    let options = this.options
+    let params = null
+    let hasAttach = false // 是否有附件
+    let noBody = NOBODY_METHODS.includes(options.method)
 
     /* ------------------------  1»» 处理signal  ---------------------- */
     options.signal.onabort = _ => {
@@ -103,7 +103,7 @@ class _Request {
 
     /* --------------------------  2»» 请求的内容 --------------------- */
     if (options.body) {
-      var type = typeof options.body
+      let type = typeof options.body
       switch (type) {
         case 'number':
         case 'string':
@@ -111,6 +111,11 @@ class _Request {
           params = options.body
           break
         case 'object':
+          let _type = getType(options.body)
+
+          if (_type === 'ArrayBuffer' || _type === 'Uint8Array') {
+            break
+          }
           // 解析表单DOM
           if (options.body.nodeName === 'FORM') {
             options.method = options.body.method.toUpperCase() || 'POST'
@@ -181,16 +186,17 @@ class _Request {
     if (noBody) {
       params = Format.param(params)
       if (params) {
-        options.url += (~options.url.indexOf('?') ? '&' : '?') + params
+        options.url += (options.url.includes('?') ? '&' : '?') + params
       }
       if (options.cache === 'no-store') {
-        options.url += (~options.url.indexOf('?') ? '&' : '?') + '_t_=' + Date.now()
+        options.url += (options.url.includes('?') ? '&' : '?') + '_t_=' + Date.now()
       }
     } else {
       if (options.body && !hasAttach) {
-        if (~options.headers['content-type'].indexOf('json')) {
+        if (options.headers['content-type'].includes('json')) {
           params = JSON.stringify(params)
-        } else {
+        }
+        if (options.headers['content-type'].includes('form')) {
           params = Format.param(params)
         }
       }
@@ -288,9 +294,9 @@ class _Request {
   }
 
   __success__(isSucc, result) {
-    var { body, status, statusText, headers } = result
-    var response = new Response(body, { status, statusText, headers })
-    var _type
+    let { body, status, statusText, headers } = result
+    let response = new Response(body, { status, statusText, headers })
+    let _type
 
     if (this._owner._inject_res) {
       response = this._owner._inject_res(response)
@@ -312,7 +318,7 @@ class _Request {
   }
 
   __cancel__(result) {
-    var response = new Response('', {
+    let response = new Response('', {
       status: 0,
       statusText: ERRORS[10100]
     })
@@ -325,7 +331,7 @@ class _Request {
   }
 
   __timeout__(result) {
-    var response = new Response('', {
+    let response = new Response('', {
       status: 504,
       statusText: ERRORS[10504]
     })
@@ -353,7 +359,7 @@ const _fetch = function (url, options) {
 }
 
 _fetch.create = function () {
-  var another = function (url, options) {
+  let another = function (url, options) {
     return new _Request(url, options, another)
   }
   inject(another)
diff --git a/src/lib/format.js b/src/lib/format.js
index 7a5d862..90a603d 100644
--- a/src/lib/format.js
+++ b/src/lib/format.js
@@ -15,7 +15,7 @@ export function getType(val) {
  * 表单序列化
  */
 function serialize(p, obj, query) {
-  var k
+  let k
   if (Array.isArray(obj)) {
     obj.forEach(function (it, i) {
       k = p ? `${p}[${Array.isArray(it) ? i : ''}]` : i
diff --git a/src/next.js b/src/next.js
index fa9edf0..c502f67 100644
--- a/src/next.js
+++ b/src/next.js
@@ -75,19 +75,25 @@ class _Request {
   }
 
   __next__() {
-    var options = this.options
-    var hasAttach = false // 是否有附件
-    var noBody = NOBODY_METHODS.includes(options.method)
+    let options = this.options
+    let hasAttach = false // 是否有附件
+    let noBody = NOBODY_METHODS.includes(options.method)
 
     /* --------------------------  1»» 请求的内容 --------------------- */
     if (options.body) {
-      var type = typeof options.body
+      let type = typeof options.body
       switch (type) {
         case 'number':
         case 'string':
           this.__type__('text')
           break
         case 'object':
+          let _type = getType(options.body)
+
+          if (_type === 'ArrayBuffer' || _type === 'Uint8Array') {
+            break
+          }
+
           // 解析表单DOM
           if (options.body.nodeName === 'FORM') {
             options.method = options.body.method.toUpperCase() || 'POST'
@@ -142,14 +148,14 @@ class _Request {
     if (noBody) {
       let tmp = Format.param(options.body)
       if (tmp) {
-        options.url += (~options.url.indexOf('?') ? '&' : '?') + tmp
+        options.url += (options.url.includes('?') ? '&' : '?') + tmp
       }
       delete options.body
     } else {
       if (options.body && !hasAttach) {
-        if (~options.headers['content-type'].indexOf('json')) {
+        if (options.headers['content-type'].includes('json')) {
           options.body = JSON.stringify(options.body)
-        } else {
+        } else if (options.headers['content-type'].includes('form')) {
           options.body = Format.param(options.body)
         }
       }
@@ -165,7 +171,7 @@ class _Request {
     }
 
     /* -----------------    5»» 构造请求    ------------------- */
-    var url = options.url
+    let url = options.url
     delete options.url
     for (let k in options) {
       if (options[k] === null || options[k] === undefined || options[k] === '') {
@@ -222,7 +228,7 @@ const _fetch = function (url, options) {
 }
 
 _fetch.create = function () {
-  var another = function (url, options) {
+  let another = function (url, options) {
     return new _Request(url, options, another)
   }
   inject(another)