diff --git a/pages/mine/index.vue b/pages/mine/index.vue
index 858a307..18d6499 100644
--- a/pages/mine/index.vue
+++ b/pages/mine/index.vue
@@ -308,7 +308,7 @@
               <view class="card-info">
                 <text class="card-name">{{ item.name || item.title || '道具卡' }}</text>
                 <text class="card-desc">{{ item.description || item.rules || '可在抽奖时使用' }}</text>
-                <text class="card-use-time" v-if="itemCardsTab === 1 && item.used_at">使用时间：{{ formatDate(item.used_at) }}</text>
+                <text class="card-use-time" v-if="itemCardsTab === 1 && item.used_at">使用时间：{{ formatDateTimeSeconds(item.used_at) }}</text>
               </view>
               <view class="card-count-badge" v-if="itemCardsTab === 0">
                 <text class="count-num">×{{ item.remaining ?? item.count ?? 1 }}</text>
@@ -925,6 +925,12 @@ export default {
       if (!d) return ''
       
       return `${d.getFullYear()}-${String(d.getMonth()+1).padStart(2,'0')}-${String(d.getDate()).padStart(2,'0')} ${String(d.getHours()).padStart(2,'0')}:${String(d.getMinutes()).padStart(2,'0')}`
+    },
+    formatDateTimeSeconds(ts) {
+      const d = this.toDate(ts)
+      if (!d) return ''
+
+      return `${d.getFullYear()}-${String(d.getMonth()+1).padStart(2,'0')}-${String(d.getDate()).padStart(2,'0')} ${String(d.getHours()).padStart(2,'0')}:${String(d.getMinutes()).padStart(2,'0')}:${String(d.getSeconds()).padStart(2,'0')}`
     }
   }
 }