diff --git a/backend/app/Http/Controllers/Client/CareController.php b/backend/app/Http/Controllers/Client/CareController.php
index 9f374bf..854a172 100644
--- a/backend/app/Http/Controllers/Client/CareController.php
+++ b/backend/app/Http/Controllers/Client/CareController.php
@@ -80,10 +80,13 @@ class CareController extends Controller
             ->where('care_profile_id', $profile->id);
 
         if ($request->filled('metric_type')) {
-            $query->where('metric_type', $request->input('metric_type'));
+            $query->where('metric_type', (string) $request->input('metric_type'));
         }
 
-        $list = $query->orderByDesc('measured_at')->limit(30)->get();
+        $limit = (int) $request->input('limit', 30);
+        $limit = max(1, min($limit, 50));
+
+        $list = $query->orderByDesc('recorded_at')->limit($limit)->get();
 
         return $this->success($list);
     }
diff --git a/client/src/views/grow/HealthMetrics.vue b/client/src/views/grow/HealthMetrics.vue
index f675a8d..603da77 100644
--- a/client/src/views/grow/HealthMetrics.vue
+++ b/client/src/views/grow/HealthMetrics.vue
@@ -32,7 +32,7 @@ onMounted(async () => {
           </div>
           <div class="metric-body">
             <span class="metric-type">{{ metricTypeLabel[m.metric_type] || '指标' }}</span>
-            <span class="metric-time">{{ m.measured_at?.slice(0, 16) }}</span>
+            <span class="metric-time">{{ m.recorded_at?.slice(0, 16) }}</span>
           </div>
           <span class="metric-val" :style="{ color: typeColor[m.metric_type] }">
             {{ m.value }} {{ metricUnit[m.metric_type] || '' }}