diff --git a/component/pear/modules/common.js b/component/pear/modules/common.js
index d383608..6f1eac8 100644
--- a/component/pear/modules/common.js
+++ b/component/pear/modules/common.js
@@ -29,6 +29,17 @@ layui.define(['jquery', 'element','table'], function(exports) {
 			return ids;
 		}
 		
+		/**
+		 * 当前是否为与移动端
+		 * */
+		this.isModile = function(){
+			if ($(window).width() <= 768) {
+				return true;
+			}
+			return false;
+		}
+		
+		
 		/**
 		 * 提交 json 数据
 		 * @param data 提交数据
diff --git a/view/system/user.html b/view/system/user.html
index 38288ea..def3343 100644
--- a/view/system/user.html
+++ b/view/system/user.html
@@ -201,7 +201,7 @@
 						type: 2,
 						title: '新增',
 						shade: 0.1,
-						area: ['500px', '400px'],
+						area: [common.isModile()?'100%':'500px', common.isModile()?'100%':'400px'],
 						content: MODULE_PATH + 'add.html'
 					});
 				}