diff --git a/frontend/src/views/GrowthQuality.vue b/frontend/src/views/GrowthQuality.vue
index 2618b5fe..86aacfac 100644
--- a/frontend/src/views/GrowthQuality.vue
+++ b/frontend/src/views/GrowthQuality.vue
@@ -84,7 +84,7 @@ import { sessionEntityName } from '@/utils/entity'
 
 // 企业只读标识（账套由登录窗口选定，页内无切换入口）
 const entityLabel = ref(sessionEntityName())
-const period = ref('2026-06')
+const period = ref('')  // 空 = 由 loadPeriods() 取后端倒序首元素（最新有数据期间）
 const periods = ref<string[]>([])
 const loading = ref(false)
 const loadingPeriods = ref(false)