diff --git a/README.md b/README.md
index d27a14d..776bcdd 100644
--- a/README.md
+++ b/README.md
@@ -1,4 +1,4 @@
-# pdfh5.js v1.2.21
+# pdfh5.js v1.2.22
 
 [![npm version](https://img.shields.io/npm/v/pdfh5.svg)](https://www.npmjs.com/package/pdfh5) [![npm downloads](https://img.shields.io/npm/dt/pdfh5.svg)](https://www.npmjs.com/package/pdfh5)   [![MIT](https://img.shields.io/badge/License-MIT-blue.svg)](https://github.com/gjTool/pdfh5/blob/master/LICENSE) [![GitHub issues](https://img.shields.io/github/issues/gjTool/pdfh5.svg)](https://github.com/gjTool/pdfh5/issues) [![GitHub stars](https://img.shields.io/github/stars/gjTool/pdfh5.svg?style=social)](https://github.com/gjTool/pdfh5/stargazers) [![GitHub forks](https://img.shields.io/github/forks/gjTool/pdfh5.svg?style=social)](https://github.com/gjTool/pdfh5/network/members)  
 
@@ -18,7 +18,7 @@
 
 ## 更新信息
 
-- 2019.11.01 更新：  1. 修复svg模式下chrome等浏览器显示高度不正常。
+- 2019.11.27 更新：  1. 新增配置项属性limit，限制pdf加载最大页数。
 
 
 ### pdfh5在线预览 （建议使用谷歌浏览器F12手机模式打开预览）
@@ -150,6 +150,7 @@ var pdfh5 = new Pdfh5('#demo', {
 |scrollEnable| {Boolean}|true、false， 默认true|是否允许pdf滚动|
 |zoomEnable| {Boolean}|true、false， 默认true|是否允许pdf手势缩放|
 |cMapUrl| {String}| 默认"./js/cmaps/"|解析pdf时，特殊情况下显示完整字体的cmaps文件夹路径|
+|limit| {Number}| 默认0 |限制pdf加载最大页数|
 
 ## 	pdf文件流请求示例（以jq ajax为例）
 
@@ -224,6 +225,7 @@ pdfh5.on("ready", function () {
 - [JayLin](https://github.com/110117ab) ￥6.66
 - [靓仔城](https://github.com/ljc7877376) ￥6.67
 - 南蓝 ￥8.80
+- 我是太阳 ￥29.99
 
 ## 扫码加入QQ群和更多小伙伴一起交流前端技术：
 ![QQ群：651601340](https://www.gjtool.cn/download/qq.png)
diff --git a/js/pdfh5.js b/js/pdfh5.js
index 3aece1d..ab3ad75 100644
--- a/js/pdfh5.js
+++ b/js/pdfh5.js
@@ -1,5 +1,5 @@
 ; (function (g, fn) {
-    var version = "1.2.21", pdfjsVersion = "2.1.266";
+    var version = "1.2.22", pdfjsVersion = "2.1.266";
     console.log("The latest version and API of pdfh5 from: https://www.gjtool.cn  (pdf.js: " + pdfjsVersion + " , pdfh5.js: " + version + ")")
     if (typeof require !== 'undefined') {
         if (g.$ === undefined) {
@@ -670,6 +670,12 @@
             options.lazy = options.lazy === true ? true : false;
             options.renderType = options.renderType === "canvas" ? "canvas" : "svg";
             options.resize = options.resize === false ? false : true;
+			if(options.limit){
+				var n = parseFloat(options.limit)
+				options.limit = isNaN(n) ? 0 : n < 0 ? 0 : n;
+			}else{
+				options.limit = 0
+			}
             if (options.renderType === "canvas") {
                 options.scale = 2;
             }
@@ -958,6 +964,9 @@
                 self.loading.hide()
                 self.thePDF = pdf;
                 self.totalNum = pdf.numPages;
+				if(options.limit>0){
+					 self.totalNum = options.limit
+				}
                 self.pageTotal.text(self.totalNum)
                 var arr1 = self.eventType["ready"];
                 if (arr1 && arr1 instanceof Array) {
diff --git a/pdf.html b/pdf.html
index f2355fa..5b8b3c7 100644
--- a/pdf.html
+++ b/pdf.html
@@ -23,6 +23,7 @@
 
         #demo {
             display: none;
+			height: 50%;
         }
     </style>
 </head>
@@ -66,13 +67,13 @@
     <script src="js/pdfh5.js" type="text/javascript" charset="utf-8"></script>
     <script type="text/javascript">
         $(function () {
-            // $("#app").remove()
-            // $("#demo").show()
+            $("#app").remove()
+            $("#demo").show()
             //当前默认优先获取浏览器地址栏？file=后面的地址，如果地址栏没有，再拿配置项的pdfurl或者data来渲染pdf
             //优先顺序：  ？file= > pdfurl > data
             var pdfh5 = new Pdfh5('#demo', {
-                pdfurl: "https://yxq.linksign.cn/api/v1.0/file/downSignFile?fileCode=15729209200281073563943",
-                // pdfurl: "testPDF/1.pdf",
+                pdfurl: "git.pdf",
+				// limit:2, // 限制加载最大页数
                 renderType:"canvas",
                 // type:"ajax",
                 lazy: true