diff --git a/README.md b/README.md
index 203860350..c6e09a521 100644
--- a/README.md
+++ b/README.md
@@ -1666,7 +1666,7 @@ parameters:
 - name {String} object name store on OSS
 - file {String|Buffer|ReadStream|File(only support Browser)|Blob(only support Browser)} object local path, content buffer or ReadStream content instance use in Node, Blob and html5 File
 - [options] {Object} optional parameters
-  - [timeout] {Number} the operation timeout
+  - [timeout] {Number} the operation timeout (ms)
   - [mime] {String} custom mime, will send with `Content-Type` entity header
   - [meta] {Object} user meta, will send with `x-oss-meta-` prefix string
     e.g.: `{ uid: 123, pid: 110 }`
@@ -4557,7 +4557,29 @@ Each error return by OSS server will contains these properties:
   you can send this request id to OSS engineer to find out what's happend.
 - hostId {String} OSS cluster name for this request
 
-The following table lists the OSS error codes:
+### ResponseTimeoutError
+
+The default timeout is 60 seconds. Please set the timeout as needed. The timeout unit is milliseconds.
+
+```javascript
+client.get('example.txt', { timeout: 60000 * 2 });
+
+client.get('example.txt', { headers: { Range: `bytes=0-${1024 * 1024 * 100}` } }); // Download the first 100MB
+```
+
+### ConnectionTimeoutError
+
+The network link timed out. Please check the network status. If there is no problem with the network, please reduce the partSize or increase the timeout.
+
+```javascript
+const client = new OSS({ ak, sk, retryMax: 10 });
+
+client.multipartUpload('example.txt', { timeout: 60000 * 2 });
+
+client.multipartUpload('example.txt', { partSize: 1024 * 512 }); // partSize 512KB
+```
+
+### The following table lists the OSS error codes:
 
 [More code info](https://help.aliyun.com/knowledge_detail/32005.html)
 
diff --git a/lib/client.js b/lib/client.js
index 520323714..421b500fe 100644
--- a/lib/client.js
+++ b/lib/client.js
@@ -223,7 +223,14 @@ async function request(params) {
     }
 
     if (err.name === 'ResponseTimeoutError') {
-      err.message = `${err.message.split(',')[0]}, please increase the timeout or use multipartDownload.`;
+      err.message = `${
+        err.message.split(',')[0]
+      }, please increase the timeout, see more details at https://github.com/ali-sdk/ali-oss#responsetimeouterror`;
+    }
+    if (err.name === 'ConnectionTimeoutError') {
+      err.message = `${
+        err.message.split(',')[0]
+      }, please increase the timeout or reduce the partSize, see more details at https://github.com/ali-sdk/ali-oss#connectiontimeouterror`;
     }
     throw err;
   }
diff --git a/lib/common/object/head.js b/lib/common/object/head.js
index 11964294a..8cbcd30d3 100644
--- a/lib/common/object/head.js
+++ b/lib/common/object/head.js
@@ -1,3 +1,4 @@
+const { checkEnv } = require('../utils/checkEnv');
 const proto = exports;
 /**
  * head
@@ -7,6 +8,9 @@ const proto = exports;
  */
 
 proto.head = async function head(name, options = {}) {
+  checkEnv(
+    'Because HeadObject has gzip enabled, head cannot get the file size correctly. If you need to get the file size, please use getObjectMeta'
+  );
   options.subres = Object.assign({}, options.subres);
   if (options.versionId) {
     options.subres.versionId = options.versionId;
diff --git a/lib/common/utils/checkEnv.d.ts b/lib/common/utils/checkEnv.d.ts
new file mode 100644
index 000000000..e536606ae
--- /dev/null
+++ b/lib/common/utils/checkEnv.d.ts
@@ -0,0 +1 @@
+export declare function checkEnv(msg: string): void;
diff --git a/lib/common/utils/checkEnv.js b/lib/common/utils/checkEnv.js
new file mode 100644
index 000000000..1a0f7b2c8
--- /dev/null
+++ b/lib/common/utils/checkEnv.js
@@ -0,0 +1,9 @@
+"use strict";
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.checkEnv = void 0;
+function checkEnv(msg) {
+    if (process.browser) {
+        console.warn(msg);
+    }
+}
+exports.checkEnv = checkEnv;
diff --git a/lib/common/utils/checkEnv.ts b/lib/common/utils/checkEnv.ts
new file mode 100644
index 000000000..b37365808
--- /dev/null
+++ b/lib/common/utils/checkEnv.ts
@@ -0,0 +1,5 @@
+export function checkEnv(msg: string) {
+  if (process.browser) {
+    console.warn(msg);
+  }
+}
diff --git a/lib/common/utils/createRequest.js b/lib/common/utils/createRequest.js
index 1842f3934..3dbec395f 100644
--- a/lib/common/utils/createRequest.js
+++ b/lib/common/utils/createRequest.js
@@ -11,6 +11,7 @@ const { encoder } = require('./encoder');
 const { isIP } = require('./isIP');
 const { setRegion } = require('./setRegion');
 const { getReqUrl } = require('../client/getReqUrl');
+const { isDingTalk } = require('./isDingTalk');
 function getHeader(headers, name) {
     return headers[name] || headers[name.toLowerCase()];
 }
@@ -43,6 +44,9 @@ function createRequest(params) {
         if (params.mime && params.mime.indexOf('/') > 0) {
             headers['Content-Type'] = params.mime;
         }
+        else if (isDingTalk()) {
+            headers['Content-Type'] = 'application/octet-stream';
+        }
         else {
             headers['Content-Type'] = mime.getType(params.mime || path.extname(params.object || ''));
         }
diff --git a/lib/common/utils/createRequest.ts b/lib/common/utils/createRequest.ts
index ad03d7938..dfbbf0618 100644
--- a/lib/common/utils/createRequest.ts
+++ b/lib/common/utils/createRequest.ts
@@ -8,6 +8,7 @@ const { encoder } = require('./encoder');
 const { isIP } = require('./isIP');
 const { setRegion } = require('./setRegion');
 const { getReqUrl } = require('../client/getReqUrl');
+const { isDingTalk } = require('./isDingTalk');
 
 interface Headers {
   [propName: string]: any;
@@ -58,6 +59,8 @@ export function createRequest(this: any, params) {
   if (!getHeader(headers, 'Content-Type')) {
     if (params.mime && params.mime.indexOf('/') > 0) {
       headers['Content-Type'] = params.mime;
+    } else if (isDingTalk()) {
+      headers['Content-Type'] = 'application/octet-stream';
     } else {
       headers['Content-Type'] = mime.getType(params.mime || path.extname(params.object || ''));
     }
diff --git a/lib/common/utils/isDingTalk.d.ts b/lib/common/utils/isDingTalk.d.ts
new file mode 100644
index 000000000..42cb892b3
--- /dev/null
+++ b/lib/common/utils/isDingTalk.d.ts
@@ -0,0 +1 @@
+export declare function isDingTalk(): boolean;
diff --git a/lib/common/utils/isDingTalk.js b/lib/common/utils/isDingTalk.js
new file mode 100644
index 000000000..04d89d9e4
--- /dev/null
+++ b/lib/common/utils/isDingTalk.js
@@ -0,0 +1,10 @@
+"use strict";
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.isDingTalk = void 0;
+function isDingTalk() {
+    if (process.browser && window.navigator.userAgent.toLowerCase().includes('aliapp(dingtalk')) {
+        return true;
+    }
+    return false;
+}
+exports.isDingTalk = isDingTalk;
diff --git a/lib/common/utils/isDingTalk.ts b/lib/common/utils/isDingTalk.ts
new file mode 100644
index 000000000..aa7ff33b4
--- /dev/null
+++ b/lib/common/utils/isDingTalk.ts
@@ -0,0 +1,6 @@
+export function isDingTalk() {
+  if (process.browser && window.navigator.userAgent.toLowerCase().includes('aliapp(dingtalk')) {
+    return true;
+  }
+  return false;
+}
diff --git a/test/browser/browser.test.js b/test/browser/browser.test.js
index 7f3fb930b..75c4ea897 100644
--- a/test/browser/browser.test.js
+++ b/test/browser/browser.test.js
@@ -726,9 +726,6 @@ describe('browser', () => {
         timeout: 300
       };
       try {
-        setTimeout(() => {
-          options.timeout = 60000;
-        }, 200);
         await store.put(name, body, options);
         assert(false);
       } catch (error) {