diff --git a/CHANGELOG.md b/CHANGELOG.md
index 323ef5c59b8485f19a942104f1345d6ed81c5c30..c823eaabef7b9483413aa99c92f16e03e58282c9 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -22,6 +22,7 @@
 ### Fixed
 
 - 修复屏幕截图工具栏颜色选择器层级低于绘图元素
+- 修复markdown全屏时内容被遮挡的问题
 
 ## [0.7.41-alpha.49] - 2025-12-11
 
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 c3232b11967492e8cc964b9b2ee8788bb2db97ed..cacc5ad68c7668f3718131fe4702df87bcb15929 100644
--- a/src/editor/markdown/ibiz-markdown-editor/ibiz-markdown-editor.scss
+++ b/src/editor/markdown/ibiz-markdown-editor/ibiz-markdown-editor.scss
@@ -52,7 +52,7 @@ $markdown: (
       top: 0;
       right: 0;
       left: 0;
-      z-index: 999;
+      z-index: 1000;
       width: 100%;
       height: calc(getCssVar('markdown', 'spacing-manual-toolbar-fullscreen-height-header'));
       padding: getCssVar('markdown', 'spacing-manual-toolbar-fullscreen-padding');
@@ -97,7 +97,7 @@ $markdown: (
       right: 0;
       bottom: 0;
       left: 0;
-      z-index: 999;
+      z-index: 1000;
       width: 100%;
       height: calc(getCssVar('markdown', 'spacing-manual-toolbar-fullscreen-height') * 2);
       padding: getCssVar('markdown', 'spacing-manual-toolbar-fullscreen-padding');
@@ -206,7 +206,10 @@ $markdown: (
       flex-grow: 1;
       height: calc(100% - #{getCssVar('markdown', 'spacing-manual-toolbar-height')})!important;
     }
- 
+
+    .cherry.fullscreen .cherry-previewer{
+      padding-top: getCssVar('markdown', 'spacing-manual-toolbar-fullscreen-height-header');
+    }
     @include when(editing){
       flex-direction: column-reverse;
     }