diff --git a/apps/ai-game-creator-shell/src/view/project-development/export/tabs/xiaohongshu/FormCard.tsx b/apps/ai-game-creator-shell/src/view/project-development/export/tabs/xiaohongshu/FormCard.tsx
index 564948380..e53cf0cb8 100644
--- a/apps/ai-game-creator-shell/src/view/project-development/export/tabs/xiaohongshu/FormCard.tsx
+++ b/apps/ai-game-creator-shell/src/view/project-development/export/tabs/xiaohongshu/FormCard.tsx
@@ -123,7 +123,9 @@ function FieldRow({
   onChange: (value: string) => void;
 }) {
   const id = useId();
-  const used = value.trim().length;
+  // 按码点计数，与宿主 `validate_text` 的 `chars().count()` 对齐：`String.length` 数的是 UTF-16
+  // 码元，一个 emoji 会被这里算成 2、宿主算成 1，计数徽标会比宿主更早报超限。
+  const used = Array.from(value.trim()).length;
   const overLimit = maxChars !== undefined && used > maxChars;
 
   return (