diff --git a/packages/earth-admin/src/components/json-editor/JsonEditor.tsx b/packages/earth-admin/src/components/json-editor/JsonEditor.tsx
index 6d728ab8..ab6d0e8e 100644
--- a/packages/earth-admin/src/components/json-editor/JsonEditor.tsx
+++ b/packages/earth-admin/src/components/json-editor/JsonEditor.tsx
@@ -48,7 +48,7 @@ export default function JsonEditor(props: JsonEditorProps) {
   return (
     <div className="marapp-qa-jsoneditor" onBlur={handleBlur}>
       <CodeMirror
-        value={JSON.stringify(json, null, 2)}
+        value={json ? JSON.stringify(json, null, 2) : null}
         options={{
           mode: 'javascript',
           json: true,