diff --git a/README.md b/README.md
index 9933ab57be1272cbe1a1ee64d2b4452ca7c6fae6..be7df05474af1d5291461dc028686fa9be025b39 100644
--- a/README.md
+++ b/README.md
@@ -75,7 +75,7 @@ SmartSQL 是一款方便、快捷的数据库文档查询、导出工具！该
 #### 4.导入导出
 
 |导入备注|导出文档
-|--|--|
+|:--:|:--:|
 | ![导入备注](https://gitee.com/izhaofu/SmartSQL/raw/master/Img/Import.png) | ![导出文档](https://gitee.com/izhaofu/SmartSQL/raw/master/Img/Export.png) |
 
 #### 5.设置
diff --git a/SmartSQL/SmartSQL.Framework/SqliteModel/ObjectGroup.cs b/SmartSQL/SmartSQL.Framework/SqliteModel/ObjectGroup.cs
index 90603db7a76b6d7464bef5782d33e475da366378..3443dbd689f74286e454d7b2ec9df6cafbeeba08 100644
--- a/SmartSQL/SmartSQL.Framework/SqliteModel/ObjectGroup.cs
+++ b/SmartSQL/SmartSQL.Framework/SqliteModel/ObjectGroup.cs
@@ -24,7 +24,7 @@ namespace SmartSQL.Framework.SqliteModel
         /// </summary>
         public string GroupName { get; set; }
         /// <summary>
-        /// 展开层级：1.展开当前项，2.展开子项
+        /// 展开层级：0.不展开，1.展开当前项，2.展开子项
         /// </summary>
         public int? OpenLevel { get; set; }
         /// <summary>
diff --git a/SmartSQL/SmartSQL/MainWindow.xaml.cs b/SmartSQL/SmartSQL/MainWindow.xaml.cs
index 8dd1aef9df193b3232aadf105c8f55b1f2a1b16b..591fc3287c0fb1b9a0f4fede0a8e05cf1676afc5 100644
--- a/SmartSQL/SmartSQL/MainWindow.xaml.cs
+++ b/SmartSQL/SmartSQL/MainWindow.xaml.cs
@@ -1,4 +1,4 @@
-using System;
+using System;
 using System.Collections.Generic;
 using System.Collections.ObjectModel;
 using System.ComponentModel;
@@ -236,7 +236,7 @@ namespace SmartSQL
                                 Icon = GROUPICON,
                                 FontWeight = "Bold",
                                 Type = ObjType.Group,
-                                IsExpanded = true
+                                IsExpanded = !(!group.OpenLevel.HasValue || group.OpenLevel == 0)
                             };
                             var nodeTable1 = new PropertyNodeItem
                             {
@@ -245,7 +245,8 @@ namespace SmartSQL
                                 Name = "treeTable",
                                 Icon = TABLEICON,
                                 Parent = nodeGroup,
-                                Type = ObjType.Type
+                                Type = ObjType.Type,
+                                IsExpanded = group.OpenLevel==2
                             };
                             itemChildList.Add(nodeTable1);
                             var nodeView1 = new PropertyNodeItem
@@ -255,7 +256,8 @@ namespace SmartSQL
                                 Name = "treeView",
                                 Icon = VIEWICON,
                                 Parent = nodeGroup,
-                                Type = ObjType.Type
+                                Type = ObjType.Type,
+                                IsExpanded = group.OpenLevel == 2
                             };
                             itemChildList.Add(nodeView1);
                             var nodeProc1 = new PropertyNodeItem
@@ -265,7 +267,8 @@ namespace SmartSQL
                                 Name = "treeProc",
                                 Icon = PROCICON,
                                 Parent = nodeGroup,
-                                Type = ObjType.Type
+                                Type = ObjType.Type,
+                                IsExpanded = group.OpenLevel == 2
                             };
                             itemChildList.Add(nodeProc1);
                             nodeGroup.Children = itemChildList;