diff --git a/packages/artplayer-document/docs/zh-cn/Properties.md b/packages/artplayer-document/docs/zh-cn/Properties.md
index c59d6464b..79a435faa 100644
--- a/packages/artplayer-document/docs/zh-cn/Properties.md
+++ b/packages/artplayer-document/docs/zh-cn/Properties.md
@@ -75,9 +75,11 @@ art.on('ready', () => {
 ## seek
 
 -   类型: `Setter`
+-   参数: `Number`
 
 视频时间跳转，单位秒
 
+
 <div className="run-code">▶ Run Code</div>
 
 ```js
@@ -94,6 +96,7 @@ art.on('ready', () => {
 ## forward
 
 -   类型: `Setter`
+-   参数: `Number`
 
 视频时间快进，单位秒
 
@@ -113,6 +116,7 @@ art.on('ready', () => {
 ## backward
 
 -   类型: `Setter`
+-   参数: `Number`
 
 视频时间快退，单位秒
 
@@ -136,6 +140,7 @@ art.on('ready', () => {
 ## volume
 
 -   类型: `Setter/Getter`
+-   参数: `Number`
 
 设置和获取视频音量，范围在：`[0, 1]`
 
@@ -148,7 +153,99 @@ var art = new Artplayer({
 });
 
 art.on('ready', () => {
+    console.info(art.volume);
     art.volume = 0.5;
-    console.log(art.volume);
+    console.info(art.volume);
 })
-```
\ No newline at end of file
+```
+
+## url
+
+-   类型: `Setter/Getter`
+-   参数: `String`
+
+设置和获取视频地址
+
+<div className="run-code">▶ Run Code</div>
+
+```js
+var art = new Artplayer({
+    container: '.artplayer-app',
+    url: '/assets/sample/video.mp4',
+});
+
+art.on('ready', () => {
+    console.info(art.url);
+    art.url = '/assets/sample/video.mp4?t=0';
+    console.info(art.url);
+})
+```
+
+## muted
+
+-   类型: `Setter/Getter`
+-   参数: `Boolean`
+
+设置和获取视频是否静音
+
+<div className="run-code">▶ Run Code</div>
+
+```js
+var art = new Artplayer({
+    container: '.artplayer-app',
+    url: '/assets/sample/video.mp4',
+});
+
+art.on('ready', () => {
+    console.info(art.muted);
+    art.muted = true;
+    console.info(art.muted);
+})
+```
+
+## currentTime
+
+-   类型: `Setter/Getter`
+-   参数: `Number`
+
+设置和获取视频当前时间，设置时间时和 `seek` 类似，但它不会触发额外的事件
+
+<div className="run-code">▶ Run Code</div>
+
+```js
+var art = new Artplayer({
+    container: '.artplayer-app',
+    url: '/assets/sample/video.mp4',
+});
+
+art.on('ready', () => {
+    console.info(art.currentTime);
+    art.currentTime = 5;
+    console.info(art.currentTime);
+})
+```
+
+## duration
+
+-   类型: `Getter`
+
+获取视频时长
+
+<div className="run-code">▶ Run Code</div>
+
+```js
+var art = new Artplayer({
+    container: '.artplayer-app',
+    url: '/assets/sample/video.mp4',
+});
+
+art.on('ready', () => {
+    console.info(art.duration);
+})
+```
+
+:::tip 提示
+
+有的视频是没有时长的，例如直播中的视频或者没被解码完成的视频，这个时候获取的时长会是 `0`
+
+:::
\ No newline at end of file