diff --git a/analyzer/index.js b/analyzer/index.js
index 4549127..9492552 100644
--- a/analyzer/index.js
+++ b/analyzer/index.js
@@ -5,4 +5,4 @@
  * @license   Licensed under MIT license
  *            See https://raw.githubusercontent.com/stefanpenner/es6-promise/master/LICENSE
  * @version   v4.2.6+9869a4bc
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Array(e,r,o,s)}function o(t,n,e,r,o,i){return f((u=f(f(n,t),f(r,i)))<<(c=o)|u>>>32-c,e);var u,c}function i(t,n,e,r,i,u,c){return o(n&e|~n&r,t,n,i,u,c)}function u(t,n,e,r,i,u,c){return o(n&r|e&~r,t,n,i,u,c)}function c(t,n,e,r,i,u,c){return o(n^e^r,t,n,i,u,c)}function a(t,n,e,r,i,u,c){return o(e^(n|~r),t,n,i,u,c)}function s(t,n){var e=l(t);e.length>16&&(e=r(e,8*t.length));for(var o=Array(16),i=Array(16),u=0;u<16;u++)o[u]=909522486^e[u],i[u]=1549556828^e[u];var c=r(o.concat(l(n)),512+8*n.length);return r(i.concat(c),640)}function f(t,n){var e=(65535&t)+(65535&n);return(t>>16)+(n>>16)+(e>>16)<<16|65535&e}function l(t){for(var n=Array(),e=0;e<8*t.length;e+=8)n[e>>5]|=(255&t.charCodeAt(e/8))<<e%32;return n}function d(t){for(var n="",e=0;e<32*t.length;e+=8)n+=String.fromCharCode(t[e>>5]>>>e%32&255);return n}function p(t){for(var n="0123456789abcdef",e="",r=0;r<4*t.length;r++)e+=n.charAt(t[r>>2]>>r%4*8+4&15)+n.charAt(t[r>>2]>>r%4*8&15);return e}function h(t){for(var n="",e=0;e<4*t.length;e+=3)for(var r=(t[e>>2]>>e%4*8&255)<<16|(t[e+1>>2]>>(e+1)%4*8&255)<<8|t[e+2>>2]>>(e+2)%4*8&255,o=0;o<4;o++)8*e+6*o>32*t.length?n+="":n+="ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/".charAt(r>>6*(3-o)&63);return n}},function(t,n,e){"use strict";n.__esModule=!0,n.stringifyQuery=function(t){return Object.keys(t).map((function(n){var e=t[n];return n+"="+encodeURIComponent(e)})).join("&")},n.decodeQuery=function(t){return Object.keys(t).reduce((function(n,e){var r=t[e];return n[e]=decodeURIComponent(r),n}),{})},n.parseQueryParams=u,n.appendQueryParams=function(t){var n=arguments.length>1&&void 0!==arguments[1]?arguments[1]:{},e=u(t),r=e.url,o=e.params;Object.keys(n).forEach((function(t){var e=n[t];null!=e?o[t]=e:delete o[t]}));var i=Object.keys(o).map((function(t){var n=o[t];return t+"="+encodeURIComponent(n)})).join("&");if(!r)return i;if(!i)return r;return r+"?"+i},n.getQueryString=function(t,n){var e=i.default.location.search,r=new 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s(t){if("scanning"===o&&!(t.ctrlKey||t.metaKey||t.altKey)){if("Enter"===t.key){var n=i.replace(/[\uFF01-\uFF5E]/g,(function(t){return String.fromCharCode(t.charCodeAt(0)-65248)})).replace(/\u3002/g,".");return n&&function(t){t.preventDefault&&t.preventDefault(),t.stopPropagation&&t.stopPropagation()}(t),console.log("onScannerKeydown",n),a(),void(n&&r&&r(n))}if(t.key&&1===t.key.length){var e=Date.now();c&&e-c>100&&a(),c=e,i+=t.key,u&&clearTimeout(u),u=setTimeout((function(){a()}),100)}}}},function(t,n,e){"use strict";n.__esModule=!0;var r="function"==typeof Symbol&&"symbol"==typeof Symbol.iterator?function(t){return typeof t}:function(t){return t&&"function"==typeof Symbol&&t.constructor===Symbol&&t!==Symbol.prototype?"symbol":typeof t};n.exportSDK=function(t,n){for(var e=arguments.length,o=Array(e>2?e-2:0),f=2;f<e;f++)o[f-2]=arguments[f];var l={};l=n&&"object"===(void 0===n?"undefined":r(n))?n:a(t);var d={};return Object.keys(l).forEach((function(n){var e=l[n],r=e&&e.method||n;c(d,n,(function(){for(var e=arguments.length,c=Array(e),a=0;a<e;a++)c[a]=arguments[a];if(!(0,i.isReadyCalled)()&&o&&o.indexOf(n)<0)throw"[IScan]:Can't call the \"IScan."+n+'" method, because "IScan" not ready, please confirm that "IScan.ready()" has been called. params: '+JSON.stringify(c);return u.apply(void 0,[t,r].concat(c))}))})),s(d),d};var o,i=e(3);(o=i)&&o.__esModule;function u(t,n){for(var e=t,r=n.split(".");r.length>1;)e=e[r.shift()];if(e&&1==r.length&&e.hasOwnProperty(r[0])){for(var o,i=arguments.length,u=Array(i>2?i-2:0),c=2;c<i;c++)u[c-2]=arguments[c];return(o=e)[r[0]].apply(o,u)}throw"IScan."+n+" not defined"}function c(t,n,e){var r=n.split(".");r.forEach((function(n,o){o==r.length-1?t[n]=e:t[n]||(t[n]={}),t=t[n]}))}function a(t){var n=arguments.length>1&&void 0!==arguments[1]?arguments[1]:"",e={};return Object.keys(t).forEach((function(o){var i=t[o];if("object"===(void 0===i?"undefined":r(i)))Object.assign(e,a(i,""+n+o+"."));else if("function"==typeof i){var u,c=""+n+o;Object.assign(e,((u={})[c]=c,u))}})),e}function s(t){Object.keys(t).forEach((function(n){var e=t[n];"object"===(void 0===e?"undefined":r(e))&&s(e)})),Object.freeze(t)}}]);
\ No newline at end of file
diff --git a/dist/index.d.ts b/dist/index.d.ts
index 4ed72c1..dc895a3 100644
--- a/dist/index.d.ts
+++ b/dist/index.d.ts
@@ -7,7 +7,7 @@ interface ScanConfigOptions {
    */
   webCanvasStyle?: string,
   /**
-   * 微信JSSDK配置，配置后会自动初始化微信JSSDK
+   * 微信JSSDK配置，微信环境才会生效，配置后会自动初始化微信JSSDK
    */
   initWechatJssdk: {
     /**
@@ -33,6 +33,47 @@ interface ScanResult {
   key: string
 }
 
+/**
+ * 监听key
+ */
+interface ScanListenerInfo {
+  /**
+   * 监听key
+   */
+  key?: string;
+  /**
+   * 监听匹配
+   */
+  match?: string;
+  /**
+   * 监听级别
+   */
+  level?: number;
+  /**
+   * 监听回调
+   */
+  listener: ScanCallback;
+  /**
+   * 取消监听
+   */
+  cancel: () => void;
+}
+
+/**
+ * 监听状态
+ */
+type ScanStatus = "scanning" | "closed";
+
+/**
+ * 监听回调
+ */
+type ScanCallback = (result: ScanResult) => any;
+
+/**
+ * 监听状态
+ */
+type ScanStatusCallback = (status: ScanStatus) => any;
+
 /** IScan */
 interface IScan {
   /**
@@ -44,7 +85,7 @@ interface IScan {
    * 监听扫码状态
    * @param callback 监听回调
    */
-  setStatusListener(callback: (status: "scanning" | "closed") => any): void;
+  setStatusListener(callback: ScanStatusCallback): void;
   /**
    * 监听扫码结果
    * @param callback 监听回调
@@ -52,17 +93,17 @@ interface IScan {
    * @param match 监听匹配
    * @param level 监听级别
    */
-  onScanListener(callback: (result: ScanResult) => any, key: string, match: string, level: number): void;
+  onScanListener(callback: ScanCallback, key: string, match?: string, level?: number): ScanListenerInfo;
   /**
    * 取消监听扫码结果
-   * @param callback 监听回调
+   * @param callback 监听回调，或监听key
    */
-  offScanListener(callback: (result: ScanResult) => any): void;
+  offScanListener(callback: ScanCallback | string): void;
   /**
    * 获取扫码状态
-   * @returns "scanning" | "closed"
+   * @returns ScanStatus
    */
-  getStatus(): "scanning" | "closed";
+  getStatus(): ScanStatus;
   /** 
    * 关闭扫码 
    */
@@ -78,8 +119,15 @@ interface IScan {
 
 }
 
+/**
+ * IScan 实例
+ */
 declare var IScan: IScan;
 
+/**
+ * 将 IScan 实例挂载到 Window 对象上
+ * 方便在全局使用
+ */
 declare interface Window {
   IScan: IScan;
 }
\ No newline at end of file
diff --git a/dist/index.js b/dist/index.js
index 4014cae..223d05d 100644
--- a/dist/index.js
+++ b/dist/index.js
@@ -1 +1 @@
-!function(n){var t={};function e(r){if(t[r])return t[r].exports;var o=t[r]={i:r,l:!1,exports:{}};return n[r].call(o.exports,o,o.exports,e),o.l=!0,o.exports}e.m=n,e.c=t,e.d=function(n,t,r){e.o(n,t)||Object.defineProperty(n,t,{enumerable:!0,get:r})},e.r=function(n){"undefined"!=typeof Symbol&&Symbol.toStringTag&&Object.defineProperty(n,Symbol.toStringTag,{value:"Module"}),Object.defineProperty(n,"__esModule",{value:!0})},e.t=function(n,t){if(1&t&&(n=e(n)),8&t)return n;if(4&t&&"object"==typeof n&&n&&n.__esModule)return n;var r=Object.create(null);if(e.r(r),Object.defineProperty(r,"default",{enumerable:!0,value:n}),2&t&&"string"!=typeof n)for(var o in n)e.d(r,o,function(t){return n[t]}.bind(null,o));return r},e.n=function(n){var t=n&&n.__esModule?function(){return n.default}:function(){return n};return e.d(t,"a",t),t},e.o=function(n,t){return Object.prototype.hasOwnProperty.call(n,t)},e.p="",e(e.s=7)}([function(n,t,e){"use strict";t.__esModule=!0;var r="function"==typeof Symbol&&"symbol"==typeof Symbol.iterator?function(n){return typeof n}:function(n){return n&&"function"==typeof Symbol&&n.constructor===Symbol&&n!==Symbol.prototype?"symbol":typeof n};t.getVersion=function(){return o.version},t.getConfig=function(n){var t=u[n];return t||(t=i[n]),t},t.setConfig=function(n){n&&"object"==(void 0===n?"undefined":r(n))&&Object.assign(u,n)};var o={version:"0.0.1.0430.1014"},i={},u={}},function(n,t,e){"use strict";t.__esModule=!0;var r;r="undefined"!=typeof GameGlobal?Object.assign({},GameGlobal):"undefined"==typeof window?{setTimeout:function(n){function t(){return n.apply(this,arguments)}return t.toString=function(){return n.toString()},t}((function(){return setTimeout.apply(void 0,arguments)})),setInterval:function(n){function t(){return n.apply(this,arguments)}return t.toString=function(){return n.toString()},t}((function(){return setInterval.apply(void 0,arguments)})),clearTimeout:function(n){function t(){return n.apply(this,arguments)}return t.toString=function(){return n.toString()},t}((function(){return clearTimeout.apply(void 0,arguments)})),clearInterval:function(n){function t(){return n.apply(this,arguments)}return t.toString=function(){return n.toString()},t}((function(){return clearInterval.apply(void 0,arguments)}))}:window,t.default=r},function(n,t,e){"use strict";t.__esModule=!0,t.createUUID=function(){return"xxxxxxxx-xxxx-4xxx-yxxx-xxxxxxxxxxxx".replace(/[xy]/g,(function(n){var t=16*Math.random()|0;return("x"==n?t:3&t|8).toString(16)}))}},function(n,t,e){"use strict";t.__esModule=!0,t.isReadyCalled=function(){return s},e(8);var r=function(n){return n&&n.__esModule?n:{default:n}}(e(1)),o=e(0),i=e(13),u=e(6),c=e(5),a=null,s=!1;r.default.__IScanReady__&&r.default.__IScanReady__(),t.default=Object.assign({},{config:function(n){return n&&(0,o.setConfig)(n),a||(a=Promise.resolve().then((function(){return(0,c.printDebug)("-------------------------------"),(0,c.printDebug)("sdk_version:",(0,o.getVersion)()),(0,c.printDebug)("-------------------------------"),(0,u.initWxJssdk)(),Promise.resolve().then((function(){s=!0})).catch((function(n){throw a=null,n}))})))},onScanListener:i.onScanListener,offScanListener:i.offScanListener,setStatusListener:i.setStatusListener,getStatus:i.getStatus,startScan:i.startScan,stopScan:i.stopScan,clear:i.clear})},function(n,t,e){"use strict";t.__esModule=!0;var r="function"==typeof Symbol&&"symbol"==typeof Symbol.iterator?function(n){return typeof n}:function(n){return n&&"function"==typeof Symbol&&n.constructor===Symbol&&n!==Symbol.prototype?"symbol":typeof n};t.toAny=function(n,t){if(null==n)return t;var e=function(n){if("string"!=typeof n)return void 0===n?"undefined":r(n);try{var t=JSON.parse(n);return void 0===t?"undefined":r(t)}catch(t){var e=parseFloat(n);return 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v(n){for(var t="",e=0;e<4*n.length;e+=3)for(var r=(n[e>>2]>>e%4*8&255)<<16|(n[e+1>>2]>>(e+1)%4*8&255)<<8|n[e+2>>2]>>(e+2)%4*8&255,o=0;o<4;o++)8*e+6*o>32*n.length?t+="":t+="ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/".charAt(r>>6*(3-o)&63);return t}},function(n,t,e){"use strict";t.__esModule=!0,t.stringifyQuery=function(n){return Object.keys(n).map((function(t){var e=n[t];return t+"="+encodeURIComponent(e)})).join("&")},t.decodeQuery=function(n){return Object.keys(n).reduce((function(t,e){var r=n[e];return t[e]=decodeURIComponent(r),t}),{})},t.parseQueryParams=o,t.appendQueryParams=function(n){var t=arguments.length>1&&void 0!==arguments[1]?arguments[1]:{},e=o(n),r=e.url,i=e.params;Object.keys(t).forEach((function(n){var e=t[n];null!=e?i[n]=e:delete i[n]}));var u=Object.keys(i).map((function(n){var t=i[n];return n+"="+encodeURIComponent(t)})).join("&");return r?u?r+"?"+u:r:u},t.getQueryString=function(n,t){var e=r.default.location.search,o=new 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0!==arguments[1]?arguments[1]:"",o={};return Object.keys(t).forEach((function(i){var u=t[i];if("object"===(void 0===u?"undefined":r(u)))Object.assign(o,n(u,""+e+i+"."));else if("function"==typeof u){var c,a=""+e+i;Object.assign(o,((c={})[a]=a,c))}})),o}(n);var a={};return Object.keys(c).forEach((function(t){var e=c[t],r=e&&e.method||t;!function(n,t,e){var r=t.split(".");r.forEach((function(t,o){o==r.length-1?n[t]=e:n[t]||(n[t]={}),n=n[t]}))}(a,t,(function(){for(var e=arguments.length,u=Array(e),c=0;c<e;c++)u[c]=arguments[c];if(!(0,o.isReadyCalled)()&&i&&i.indexOf(t)<0)throw"[IScan]:Can't call the \"IScan."+t+'" method, because "IScan" not ready, please confirm that "IScan.ready()" has been called. params: '+JSON.stringify(u);return function(n,t){for(var e=n,r=t.split(".");r.length>1;)e=e[r.shift()];if(e&&1==r.length&&e.hasOwnProperty(r[0])){for(var o,i=arguments.length,u=Array(i>2?i-2:0),c=2;c<i;c++)u[c-2]=arguments[c];return(o=e)[r[0]].apply(o,u)}throw"IScan."+t+" not defined"}.apply(void 0,[n,r].concat(u))}))})),function n(t){Object.keys(t).forEach((function(e){var o=t[e];"object"===(void 0===o?"undefined":r(o))&&n(o)})),Object.freeze(t)}(a),a};var o=e(3);!function(n){n&&n.__esModule}(o)}]);
\ No newline at end of file
diff --git a/src/services/provider/scan.js b/src/services/provider/scan.js
index 51623cd..82f1b6f 100644
--- a/src/services/provider/scan.js
+++ b/src/services/provider/scan.js
@@ -278,7 +278,12 @@ export function onScanListener(listener, key, match, level) {
 export function offScanListener(listener) {
   for (let i = 0; i < _scan_listener_list.length; i++) {
     const _i = _scan_listener_list[i];
-    if (_i.listener === listener) {
+    if (typeof listener === 'string') {
+      if (_i.key === listener) {
+        _i.cancel();
+        break;
+      }
+    } else if (_i.listener === listener) {
       _i.cancel();
       break;
     }
diff --git a/types/index.d.ts b/types/index.d.ts
index 4ed72c1..dc895a3 100644
--- a/types/index.d.ts
+++ b/types/index.d.ts
@@ -7,7 +7,7 @@ interface ScanConfigOptions {
    */
   webCanvasStyle?: string,
   /**
-   * 微信JSSDK配置，配置后会自动初始化微信JSSDK
+   * 微信JSSDK配置，微信环境才会生效，配置后会自动初始化微信JSSDK
    */
   initWechatJssdk: {
     /**
@@ -33,6 +33,47 @@ interface ScanResult {
   key: string
 }
 
+/**
+ * 监听key
+ */
+interface ScanListenerInfo {
+  /**
+   * 监听key
+   */
+  key?: string;
+  /**
+   * 监听匹配
+   */
+  match?: string;
+  /**
+   * 监听级别
+   */
+  level?: number;
+  /**
+   * 监听回调
+   */
+  listener: ScanCallback;
+  /**
+   * 取消监听
+   */
+  cancel: () => void;
+}
+
+/**
+ * 监听状态
+ */
+type ScanStatus = "scanning" | "closed";
+
+/**
+ * 监听回调
+ */
+type ScanCallback = (result: ScanResult) => any;
+
+/**
+ * 监听状态
+ */
+type ScanStatusCallback = (status: ScanStatus) => any;
+
 /** IScan */
 interface IScan {
   /**
@@ -44,7 +85,7 @@ interface IScan {
    * 监听扫码状态
    * @param callback 监听回调
    */
-  setStatusListener(callback: (status: "scanning" | "closed") => any): void;
+  setStatusListener(callback: ScanStatusCallback): void;
   /**
    * 监听扫码结果
    * @param callback 监听回调
@@ -52,17 +93,17 @@ interface IScan {
    * @param match 监听匹配
    * @param level 监听级别
    */
-  onScanListener(callback: (result: ScanResult) => any, key: string, match: string, level: number): void;
+  onScanListener(callback: ScanCallback, key: string, match?: string, level?: number): ScanListenerInfo;
   /**
    * 取消监听扫码结果
-   * @param callback 监听回调
+   * @param callback 监听回调，或监听key
    */
-  offScanListener(callback: (result: ScanResult) => any): void;
+  offScanListener(callback: ScanCallback | string): void;
   /**
    * 获取扫码状态
-   * @returns "scanning" | "closed"
+   * @returns ScanStatus
    */
-  getStatus(): "scanning" | "closed";
+  getStatus(): ScanStatus;
   /** 
    * 关闭扫码 
    */
@@ -78,8 +119,15 @@ interface IScan {
 
 }
 
+/**
+ * IScan 实例
+ */
 declare var IScan: IScan;
 
+/**
+ * 将 IScan 实例挂载到 Window 对象上
+ * 方便在全局使用
+ */
 declare interface Window {
   IScan: IScan;
 }
\ No newline at end of file