diff --git a/src/hooks/useExport.ts b/src/hooks/useExport.ts
index 5f6c8b03..5248a39c 100644
--- a/src/hooks/useExport.ts
+++ b/src/hooks/useExport.ts
@@ -363,6 +363,10 @@ export default () => {
       pptx.defineLayout({ name: 'A3', width: 10, height: 7.0710678 })
       pptx.layout = 'A3'
     }
+    else if (viewportRatio.value === 1.41421356) {
+      pptx.defineLayout({ name: 'A3_V', width: 10, height: 14.1421356 })
+      pptx.layout = 'A3_V'
+    }
     else pptx.layout = 'LAYOUT_16x9'
 
     if (masterOverwrite) {
diff --git a/src/views/Editor/Toolbar/SlideDesignPanel.vue b/src/views/Editor/Toolbar/SlideDesignPanel.vue
index cd319301..63f5fd71 100644
--- a/src/views/Editor/Toolbar/SlideDesignPanel.vue
+++ b/src/views/Editor/Toolbar/SlideDesignPanel.vue
@@ -113,6 +113,7 @@
           { label: '宽屏 16 : 10', value: 0.625 },
           { label: '标准 4 : 3', value: 0.75 },
           { label: '纸张 A3 / A4', value: 0.70710678 },
+          { label: '竖向 A3 / A4', value: 1.41421356 },
         ]"
       />
     </div>