diff --git a/static/app.js b/static/app.js
index 0bb445f..4289620 100644
--- a/static/app.js
+++ b/static/app.js
@@ -212,15 +212,13 @@
      ================================================================ */
   function loadStats() {
     apiGetStats(function(err, data) {
-      if (err) return;
-      // 更新统计数字
-      document.getElementById('stat-days').textContent = data.total_days;
-      document.getElementById('stat-morning').textContent = data.total_morning;
-      document.getElementById('stat-study').textContent = data.total_study;
-
-      // 更新日历状态
-      calendarStatus = data.calendar || {};
-      renderCalendar();
+      if (!err && data) {
+        document.getElementById('stat-days').textContent = data.total_days;
+        document.getElementById('stat-morning').textContent = data.total_morning;
+        document.getElementById('stat-study').textContent = data.total_study;
+        calendarStatus = data.calendar || {};
+      }
+      renderCalendar(); // 无论成败都重新渲染
     });
   }