diff --git a/src/main/java/org/jcnc/jnotepad/common/constants/AppConstants.java b/src/main/java/org/jcnc/jnotepad/common/constants/AppConstants.java
index 4c946b0..ef0fee4 100644
--- a/src/main/java/org/jcnc/jnotepad/common/constants/AppConstants.java
+++ b/src/main/java/org/jcnc/jnotepad/common/constants/AppConstants.java
@@ -25,11 +25,11 @@ public class AppConstants {
     /**
      * 初始宽度
      */
-    public static final double SCREEN_WIDTH = 800;
+    public static final double SCREEN_WIDTH = 1050;
     /**
      * 初始高度
      */
-    public static final double SCREEN_LENGTH = 600;
+    public static final double SCREEN_LENGTH = 750;
     /**
      * logo地址
      */
diff --git a/src/main/java/org/jcnc/jnotepad/controller/event/handler/menubar/OpenDirectory.java b/src/main/java/org/jcnc/jnotepad/controller/event/handler/menubar/OpenDirectory.java
index fb8c1f1..6b4eb98 100644
--- a/src/main/java/org/jcnc/jnotepad/controller/event/handler/menubar/OpenDirectory.java
+++ b/src/main/java/org/jcnc/jnotepad/controller/event/handler/menubar/OpenDirectory.java
@@ -17,9 +17,11 @@ import org.jcnc.jnotepad.views.manager.DirectorySidebarManager;
 import java.io.File;
 
 /**
- * @author : cccqyu
- * @createTime 2023/10/2  1:29
- * @description 当用户选择打开文件夹时，将创建一个左侧树型结构目录。
+ * 打开文件夹處理器
+ *
+ * <p>当用户选择打开文件夹时，将创建一个左侧树型结构目录。</p>
+ *
+ * @author cccqyu
  */
 public class OpenDirectory implements EventHandler<ActionEvent> {
 
diff --git a/src/main/java/org/jcnc/jnotepad/controller/event/handler/setting/DirTreeBtn.java b/src/main/java/org/jcnc/jnotepad/controller/event/handler/setting/DirTreeBtn.java
index 335a3a5..82436b7 100644
--- a/src/main/java/org/jcnc/jnotepad/controller/event/handler/setting/DirTreeBtn.java
+++ b/src/main/java/org/jcnc/jnotepad/controller/event/handler/setting/DirTreeBtn.java
@@ -4,10 +4,13 @@ import javafx.event.ActionEvent;
 import javafx.event.EventHandler;
 import org.jcnc.jnotepad.views.manager.DirectorySidebarManager;
 
+
 /**
- * @author : cccqyu
- * @createTime 2023/10/2  17:24
- * @description 文件树按钮事件的事件处理程序。
+ * 文件树按钮
+ *
+ * <p>文件树按钮事件的事件处理程序。</p>
+ *
+ * @author cccqyu
  */
 public class DirTreeBtn implements EventHandler<ActionEvent> {
 
diff --git a/src/main/java/org/jcnc/jnotepad/model/entity/DirFileModel.java b/src/main/java/org/jcnc/jnotepad/model/entity/DirFileModel.java
index 42f4e39..d3df0f0 100644
--- a/src/main/java/org/jcnc/jnotepad/model/entity/DirFileModel.java
+++ b/src/main/java/org/jcnc/jnotepad/model/entity/DirFileModel.java
@@ -4,10 +4,13 @@ import org.kordamp.ikonli.javafx.FontIcon;
 
 import java.util.List;
 
+
 /**
- * @author : cccqyu
- * @createTime 2023/10/2  20:31
- * @description 文件夹实体类
+ * 文件夹实体类
+ *
+ * <p>用于存储文件夹结构</p>
+ *
+ * @author cccqyu
  */
 public class DirFileModel {
     private String path;
@@ -32,11 +35,7 @@ public class DirFileModel {
     public List<DirFileModel> getChildFile() {
         return childFile;
     }
-
-    public void setChildFile(List<DirFileModel> childFile) {
-        this.childFile = childFile;
-    }
-
+    
     public String getPath() {
         return path;
     }
diff --git a/src/main/java/org/jcnc/jnotepad/ui/dialog/factory/DirectoryChooserFactory.java b/src/main/java/org/jcnc/jnotepad/ui/dialog/factory/DirectoryChooserFactory.java
index dbe4005..a90dec7 100644
--- a/src/main/java/org/jcnc/jnotepad/ui/dialog/factory/DirectoryChooserFactory.java
+++ b/src/main/java/org/jcnc/jnotepad/ui/dialog/factory/DirectoryChooserFactory.java
@@ -4,10 +4,13 @@ import javafx.stage.DirectoryChooser;
 
 import java.io.File;
 
+
 /**
- * @author : cccqyu
- * @createTime 2023/10/2  1:49
- * @description 文件夹选择对话框工厂,该工厂接口用于创建文件夹选择对话框，包括原始和详细两种类型。
+ * 文件夹选择对话框工厂
+ *
+ * <p>文件夹选择对话框工厂,该工厂接口用于创建文件夹选择对话框，包括原始和详细两种类型。</p>
+ *
+ * @author cccqyu
  */
 public interface DirectoryChooserFactory {
     /**
diff --git a/src/main/java/org/jcnc/jnotepad/ui/dialog/factory/impl/BasicDirectoryChooserFactory.java b/src/main/java/org/jcnc/jnotepad/ui/dialog/factory/impl/BasicDirectoryChooserFactory.java
index 20fb574..acf4298 100644
--- a/src/main/java/org/jcnc/jnotepad/ui/dialog/factory/impl/BasicDirectoryChooserFactory.java
+++ b/src/main/java/org/jcnc/jnotepad/ui/dialog/factory/impl/BasicDirectoryChooserFactory.java
@@ -6,9 +6,11 @@ import org.jcnc.jnotepad.ui.dialog.factory.DirectoryChooserFactory;
 import java.io.File;
 
 /**
- * @author : cccqyu@outlook.com
- * @createTime 2023/10/2  1:54
- * @description 基本文件夹选择对话框
+ * 文件夹选择对话框
+ *
+ * <p>基本文件夹选择对话框的封装</p>
+ *
+ * @author cccqyu
  */
 public class BasicDirectoryChooserFactory implements DirectoryChooserFactory {
 
diff --git a/src/main/java/org/jcnc/jnotepad/views/manager/DirectorySidebarManager.java b/src/main/java/org/jcnc/jnotepad/views/manager/DirectorySidebarManager.java
index 8f1a4c1..f1aae48 100644
--- a/src/main/java/org/jcnc/jnotepad/views/manager/DirectorySidebarManager.java
+++ b/src/main/java/org/jcnc/jnotepad/views/manager/DirectorySidebarManager.java
@@ -1,6 +1,7 @@
 package org.jcnc.jnotepad.views.manager;
 
 import javafx.beans.value.ChangeListener;
+import javafx.scene.control.SplitPane;
 import javafx.scene.control.TreeItem;
 import org.jcnc.jnotepad.common.manager.ApplicationCacheManager;
 import org.jcnc.jnotepad.common.util.FileUtil;
@@ -15,7 +16,9 @@ import java.util.List;
 /**
  * 文件树管理类
  *
- * @author : cccqyu
+ * <p>管理文件树，处理文件树操作</p>
+ *
+ * @author cccqyu
  */
 public class DirectorySidebarManager {
 
@@ -38,20 +41,31 @@ public class DirectorySidebarManager {
 
     private static final DirectorySidebarPane DIRECTORY_SIDEBAR_PANE = DirectorySidebarPane.getInstance();
 
+
+    private static final double lastDividerPosition = 0.3;
+
     /**
      * 控制文件树显示
      */
     public void controlShow() {
-        boolean isVisible = DIRECTORY_SIDEBAR_PANE.isVisible();
-        // 设置自身显示
-        DIRECTORY_SIDEBAR_PANE.setVisible(!isVisible);
-        if (isVisible) {
-            // 布局中移除
-            MAIN_BORDER_PANE.setLeft(null);
-        } else {
-            MAIN_BORDER_PANE.setLeft(DIRECTORY_SIDEBAR_PANE);
-        }
+        // 获取分割面板
+        SplitPane center = (SplitPane) MAIN_BORDER_PANE.getCenter();
+        // 获取分割条位置
+        double dividerPosition = center.getDividerPositions()[0];
+        // 保留分割条位置一位小数
+        String formattedNumber = String.format("%.1f", dividerPosition);
+        double roundedNumber = Double.parseDouble(formattedNumber);
 
+        // 分割条位置不等于 代表展开
+        if (roundedNumber != 0.0) {
+            // 收缩分割条 收缩文件树
+            center.setDividerPositions(0.0);
+
+        } else {
+            // 展开分割条，文件树
+            center.setDividerPositions(lastDividerPosition);
+
+        }
     }
 
     /**
@@ -60,10 +74,10 @@ public class DirectorySidebarManager {
      * @param bool 打开
      */
     public void controlShow(boolean bool) {
-        // 设置自身显示
-        DIRECTORY_SIDEBAR_PANE.setVisible(bool);
-        if (!MAIN_BORDER_PANE.getChildren().contains(DIRECTORY_SIDEBAR_PANE)) {
-            MAIN_BORDER_PANE.setLeft(DIRECTORY_SIDEBAR_PANE);
+        if (bool) {
+            // 获取分割面板
+            SplitPane center = (SplitPane) MAIN_BORDER_PANE.getCenter();
+            center.setDividerPositions(lastDividerPosition);
         }
 
     }
diff --git a/src/main/java/org/jcnc/jnotepad/views/manager/MainBorderPaneManager.java b/src/main/java/org/jcnc/jnotepad/views/manager/MainBorderPaneManager.java
index a527423..bf0e08c 100644
--- a/src/main/java/org/jcnc/jnotepad/views/manager/MainBorderPaneManager.java
+++ b/src/main/java/org/jcnc/jnotepad/views/manager/MainBorderPaneManager.java
@@ -1,6 +1,8 @@
 package org.jcnc.jnotepad.views.manager;
 
+import javafx.scene.control.SplitPane;
 import org.jcnc.jnotepad.views.root.center.main.MainBorderPane;
+import org.jcnc.jnotepad.views.root.center.main.center.directory.DirectorySidebarPane;
 import org.jcnc.jnotepad.views.root.center.main.center.tab.CenterTabPane;
 
 /**
@@ -12,7 +14,10 @@ public class MainBorderPaneManager {
     private static final MainBorderPaneManager INSTANCE = new MainBorderPaneManager();
 
     private static final MainBorderPane MAIN_BORDER_PANE = MainBorderPane.getInstance();
+    private static final DirectorySidebarPane DIRECTORY_SIDEBAR_PANE = DirectorySidebarPane.getInstance();
 
+    // 默认分割条位置
+    private static final double defaultDividerPositions = 0.3;
     private MainBorderPaneManager() {
 
     }
@@ -22,7 +27,13 @@ public class MainBorderPaneManager {
     }
 
     public void initMainBorderPane() {
-        // 文本框
-        MAIN_BORDER_PANE.setCenterComponent(CenterTabPane.getInstance());
+        // 文件树和文本框的布局
+        SplitPane splitPane = new SplitPane();
+        splitPane.getItems().add(0, DIRECTORY_SIDEBAR_PANE);
+        splitPane.getItems().add(1, CenterTabPane.getInstance());
+        splitPane.setDividerPositions(defaultDividerPositions);
+
+        // 将文件树以及文本框设置在布局中部
+        MAIN_BORDER_PANE.setCenterComponent(splitPane);
     }
 }
diff --git a/src/main/java/org/jcnc/jnotepad/views/root/center/main/center/directory/DirectorySidebarPane.java b/src/main/java/org/jcnc/jnotepad/views/root/center/main/center/directory/DirectorySidebarPane.java
index 8f171a0..fec7434 100644
--- a/src/main/java/org/jcnc/jnotepad/views/root/center/main/center/directory/DirectorySidebarPane.java
+++ b/src/main/java/org/jcnc/jnotepad/views/root/center/main/center/directory/DirectorySidebarPane.java
@@ -10,9 +10,11 @@ import java.util.Objects;
 
 
 /**
- * @author : cccqyu
- * @createTime 2023/10/2  20:34
- * @description TreeView封装
+ * 目录树ui
+ *
+ * <p>TreeView封装</p>
+ *
+ * @author cccqyu
  */
 public class DirectorySidebarPane extends TreeView<DirFileModel> {
 
@@ -21,8 +23,6 @@ public class DirectorySidebarPane extends TreeView<DirFileModel> {
     private static final int CLICK_COUNT = 2;
 
     private DirectorySidebarPane() {
-        this.setVisible(false);
-
         this.setOnMouseClicked(mouseEvent -> {
             if (mouseEvent.getClickCount() == CLICK_COUNT) {
                 TreeItem<DirFileModel> item = DirectorySidebarPane.this.getSelectionModel().getSelectedItem();
@@ -35,7 +35,6 @@ public class DirectorySidebarPane extends TreeView<DirFileModel> {
                     return;
                 }
                 OpenFile.openFile(file);
-
             }
         });
     }
diff --git a/src/main/java/org/jcnc/jnotepad/views/root/left/sidebar/tools/ToolVerticalBox.java b/src/main/java/org/jcnc/jnotepad/views/root/left/sidebar/tools/ToolVerticalBox.java
index 7caf915..8f2f74c 100644
--- a/src/main/java/org/jcnc/jnotepad/views/root/left/sidebar/tools/ToolVerticalBox.java
+++ b/src/main/java/org/jcnc/jnotepad/views/root/left/sidebar/tools/ToolVerticalBox.java
@@ -5,9 +5,11 @@ import javafx.scene.layout.VBox;
 import org.jcnc.jnotepad.ui.module.AbstractVerticalBox;
 
 /**
- * @author : cccqyu
- * @createTime 2023/10/2  20:40
- * @description 垂直布局
+ * 垂直布局类
+ *
+ * <p>用于toolbar的垂直布局</p>
+ *
+ * @author cccqyu
  */
 public class ToolVerticalBox extends AbstractVerticalBox {
     /**