diff --git a/apps/ai-game-creator-shell/src/features/project-workspace/directThreadEvents.ts b/apps/ai-game-creator-shell/src/features/project-workspace/directThreadEvents.ts
index 0570f605f..dfcc7d117 100644
--- a/apps/ai-game-creator-shell/src/features/project-workspace/directThreadEvents.ts
+++ b/apps/ai-game-creator-shell/src/features/project-workspace/directThreadEvents.ts
@@ -121,6 +121,8 @@ export function reduceDirectThreadEvent(
     case 'turn.started':
       next.status = 'running';
       next.progress = '正在处理';
+      next.accumulatedText = '';
+      next.activeItemIds = new Set();
       break;
     case 'item.started':
       if (event.itemId) next.activeItemIds.add(event.itemId);