diff --git a/src/modules/lesson-preparation/constants.ts b/src/modules/lesson-preparation/constants.ts
index a863f71..55085f2 100644
--- a/src/modules/lesson-preparation/constants.ts
+++ b/src/modules/lesson-preparation/constants.ts
@@ -15,6 +15,7 @@ export const BLOCK_TYPE_KEYS: Record<BlockType, string> = {
   exercise: "exercise",
   rich_text: "rich_text",
   reflection: "reflection",
+  interaction: "interaction",
 };
 
 // 向后兼容：保留 BLOCK_TYPE_LABELS 名称但值为 i18n 键（实际翻译由组件层完成）