diff --git a/src/components/UsageFooter.tsx b/src/components/UsageFooter.tsx
index fc4b0ac2..fff72dcf 100644
--- a/src/components/UsageFooter.tsx
+++ b/src/components/UsageFooter.tsx
@@ -180,6 +180,13 @@ const UsageFooter: React.FC<UsageFooterProps> = ({
               {firstUsage.unit}
             </span>
           )}
+
+          {/* 扩展字段 extra */}
+          {firstUsage.extra && (
+            <span className="text-gray-500 dark:text-gray-400 truncate max-w-[150px]" title={firstUsage.extra}>
+              {firstUsage.extra}
+            </span>
+          )}
         </div>
       </div>
     );