diff --git a/plugins/stats_dashboard/templates/index.html b/plugins/stats_dashboard/templates/index.html
index 8255ab4..f59a9d8 100644
--- a/plugins/stats_dashboard/templates/index.html
+++ b/plugins/stats_dashboard/templates/index.html
@@ -56,7 +56,11 @@
                     <span>平均响应时间</span>
                 </div>
                 <div style="font-size: 24px; text-align: center;">
-                    {{ "%.2f"|format(avgResponseTime|float) }} ms
+                    {% if avgResponseTime is defined %}
+                        {{ "%.2f"|format(avgResponseTime|float) }} ms
+                    {% else %}
+                        0.00 ms
+                    {% endif %}
                 </div>
             </el-card>
         </el-col>