diff --git a/packages/core/client/src/schema-component/antd/markdown/util.ts b/packages/core/client/src/schema-component/antd/markdown/util.ts
index e1db7e704..702fdb124 100644
--- a/packages/core/client/src/schema-component/antd/markdown/util.ts
+++ b/packages/core/client/src/schema-component/antd/markdown/util.ts
@@ -3,6 +3,9 @@ import './highlight-theme/default.less';
 import './highlight-theme/table.less';
 
 export async function parseMarkdown(text: string) {
+  if (!text) {
+    return text;
+  }
   const m = await import('./md');
   return m.default.render(text);
 }