diff --git a/CHANGELOG.md b/CHANGELOG.md
index 2aa2e0515b6ba37f002688c14c6771a0ededb692..7610dba5f3c12b886e9c6975e344b492ff9b27c0 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -7,6 +7,10 @@
 
 ## [Unreleased]
 
+### Added
+
+- 新增markdown编辑器全屏逻辑
+
 ## [0.7.38-alpha.64] - 2025-03-06
 
 ### Added
diff --git a/src/editor/markdown/ibiz-markdown-editor/ibiz-markdown-editor.scss b/src/editor/markdown/ibiz-markdown-editor/ibiz-markdown-editor.scss
index b597f21f61f1eb88fa3a11a782eb1113ab6833b4..c4d482664c89de8cd8c1c1fc5d754575f6d423da 100644
--- a/src/editor/markdown/ibiz-markdown-editor/ibiz-markdown-editor.scss
+++ b/src/editor/markdown/ibiz-markdown-editor/ibiz-markdown-editor.scss
@@ -18,6 +18,15 @@ $markdown: (
     .cherry{
       min-height: auto;
     }
+
+    .#{bem('markdown__fullscreen')} {
+      position: absolute;
+      top: 8px;
+      right: 12px;
+      z-index: 99;
+      font-size: getCssVar('font-size', 'regular');
+      line-height: 2.8;
+    }
   }
   
   .cherry-preview--full {
diff --git a/src/editor/markdown/ibiz-markdown-editor/ibiz-markdown-editor.tsx b/src/editor/markdown/ibiz-markdown-editor/ibiz-markdown-editor.tsx
index cc0ebb2643ffc8d1787eb90810ece0754feb36dd..e6f1ea0be72ec788829c797783042b081a6f15be 100644
--- a/src/editor/markdown/ibiz-markdown-editor/ibiz-markdown-editor.tsx
+++ b/src/editor/markdown/ibiz-markdown-editor/ibiz-markdown-editor.tsx
@@ -147,6 +147,47 @@ const IBizMarkDown: any = defineComponent({
       return { [e]: src };
     };
 
+    // 创建元素
+    const createElement = (
+      tagName: string,
+      className: string = '',
+    ): HTMLElement => {
+      const element = document.createElement(tagName);
+      element.className = className;
+      return element;
+    };
+
+    // 创建 cherry-markdown 图标
+    const createCherryIcon = (tagName: string): HTMLElement => {
+      return createElement('i', `ch-icon ch-icon-${tagName}`);
+    };
+
+    // 全屏切换事件，参考 cherry-markdown 全屏逻辑实现
+    const fullscreenClassName = ns.e('fullscreen');
+    const onFullscreen = () => {
+      if (editor.value && markDownBox.value) {
+        const parentElement =
+          editor.value.editor.options.editorDom.parentElement;
+        const cherryClass = parentElement.classList;
+        const fullscreenNode = markDownBox.value.querySelector(
+          `.${fullscreenClassName}`,
+        );
+        if (!fullscreenNode) return;
+        while (fullscreenNode.firstChild) {
+          // 循环删除父元素下的第一个子元素，直到父元素下没有子元素
+          fullscreenNode.removeChild(fullscreenNode.firstChild);
+        }
+        if (cherryClass.contains('fullscreen')) {
+          fullscreenNode.appendChild(createCherryIcon('fullscreen'));
+          cherryClass.remove('fullscreen');
+        } else {
+          fullscreenNode.appendChild(createCherryIcon('minscreen'));
+          cherryClass.add('fullscreen');
+        }
+        editor.value.editor.editor.refresh();
+      }
+    };
+
     const editorInit = () => {
       if (props.disabled) {
         defaultModel.value = 'previewOnly';
@@ -237,6 +278,22 @@ const IBizMarkDown: any = defineComponent({
         if (customTheme) {
           editor.value.setTheme(customTheme);
         }
+
+        // 初始化全屏按钮
+        const span = createElement(
+          'span',
+          `${fullscreenClassName} cherry-toolbar-button`,
+        );
+        span.title = '全屏';
+        span.onclick = onFullscreen;
+        span.appendChild(createCherryIcon('fullscreen'));
+        // 适配按钮样式
+        const parentElement = props.disabled
+          ? editor.value.editor.options.editorDom.parentElement
+          : editor.value.editor.options.editorDom.parentElement.querySelector(
+              '.cherry-toolbar>.toolbar-right',
+            );
+        parentElement?.appendChild(span);
       });
     };