diff --git a/index.js b/index.js
index 348706d..88e6568 100755
--- a/index.js
+++ b/index.js
@@ -25,9 +25,11 @@ var config = Object.assign( {
     model: "z16",
     width: 150,
     height: 300,
+    opacity: 0.9,
     mobileShow: "true",
     mobileWidth: 75,
     mobileHeight: 150,
+    mobileOpacity: 0.8,
     position: "right",
     horizontalOffset: 0,
     verticalOffset: -20,
@@ -50,6 +52,7 @@ hexo.extend.helper.register('live2d', function() {
         z-index: 999;
         pointer-events: none;
         bottom: ${config.verticalOffset}px;
+        opacity: ${config.opacity};
       }
     </style>
     <script src="/live2d/device.min.js"></script>
@@ -59,6 +62,7 @@ hexo.extend.helper.register('live2d', function() {
       ${config.mobileShow ? `
       document.getElementById("${config.id}").width = ${config.mobileWidth};
       document.getElementById("${config.id}").height = ${config.mobileHeight};
+      document.getElementById("${config.id}").style.opacity = ${config.mobileOpacity};
       document.write('<script type="text/javascript" src="/live2d/script.js"><\\/script>');
       document.write('<script>loadlive2d(${JSON.stringify(config.id)}, ${JSON.stringify(url.resolve("/live2d/assets/", config.model + ".model.json"))}, 0.5)<\\/script>');
       ` : ``}
diff --git a/readme.md b/readme.md
index 6464ca8..55c9b65 100644
--- a/readme.md
+++ b/readme.md
@@ -19,7 +19,7 @@ Demo: [https://huaji8.top/post/live2d-plugin-2.0/](https://huaji8.top/post/live2
 Install module:
 
 ```
-npm install -save hexo-helper-live2d
+npm install --save hexo-helper-live2d
 ```
 
 > Tips: If you run into a npm problem, try to use `npm cache verify` or `npm cache clean` to fix it.
@@ -73,9 +73,11 @@ live2d:
   model: z16 # The model that you are willing to show. default: z16
   width: 150 # The width of your model. default: 150
   height: 300 # The height of your model. default: 300
+  opacity: 0.9 # The opacity of your model. default: 0.9
   mobileShow: true # Whether to show on mobile devices. default: true
   mobileWidth: 75 # The width of your model on mobile devices. default: 150
   mobileHeight: 150 # The height of your model on mobile devices. default: 75
+  mobileOpacity: 0.8,# The opacity of your model on mobile devices. default: 0.8
   position: right # Which side the model is shown at. default: right
   horizontalOffset: 0 # The horizontal offset. default: 0
   verticalOffset: -20 # The offset of the bottom. default: -20
@@ -108,9 +110,11 @@ live2d:
 
 - `width`: The width of your model. default: 150
 - `height`: The height of your model. default: 300
+- `opacity`: The opacity of your model. default: 0.9
 - `mobileShow`: Whether to show on mobile devices. default: true
 - `mobileWidth`: The width of your model on mobile devices. default: 150
 - `mobileHeight`: The height of your model on mobile devices. default: 75
+- `mobileOpacity`: The opacity of your model on mobile devices. default: 0.8
 - `horizontalOffset`: The horizontal offset. default: 0
 - `verticalOffset`: The offset of the bottom. default: -20
 - `position`:  `left` or `right` side the model is shown at. default: right
diff --git a/readme.zh-CN.md b/readme.zh-CN.md
index 44d204f..86df93e 100644
--- a/readme.zh-CN.md
+++ b/readme.zh-CN.md
@@ -19,7 +19,7 @@
 安装模块: 
 
 ```
-npm install -save hexo-helper-live2d
+npm install --save hexo-helper-live2d
 ```
 
 > Tips: 遇到npm的相关错误，试试 `npm cache verify` 或 `npm cache clean` 呗~
@@ -75,9 +75,11 @@ live2d:
   model: z16 # 模型名称 默认值: z16
   width: 150 # 宽度 默认值: 150
   height: 300 # 高度 默认值: 300
+  opacity: 0..9 # 透明度 默认值: 0.9
   mobileShow: true # 是否在移动设备上显示 默认值: true
   mobileWidth: 75 # 移动设备上的宽度 默认值: 75
   mobileHeight: 150 # 移动设备上的高度 默认值: 150
+  mobileOpacity: 0.8  # 移动设备上的透明度 默认值: 0.8
   position: right # 模型左右侧放置位置 默认值: right
   horizontalOffset: 0 # 元素的水平偏移 默认值: 0
   verticalOffset: -20 # 元素的底部偏移 默认值: -20
@@ -109,9 +111,11 @@ live2d:
 
 - `width`: 宽度 默认值: 150
 - `height`: 高度 默认值: 300
+- `opacity`: 透明度 默认值: 0.9
 - `mobileShow`: 是否在移动设备上显示 默认值: true
 - `mobileWidth`: 移动设备上的宽度 默认值: 75
 - `mobileHeight`: 移动设备上的高度 默认值: 150
+- `mobileOpacity`: 移动设备上的透明度 默认值: 0.8
 - `position`: 模型左右侧放置位置 `left` 或 `right` 默认值: false
 - `horizontalOffset`: `<canvas>` 元素的水平偏移 默认值: 0
 - `verticalOffset`: `<canvas>` 元素的底部偏移 默认值: -20