diff --git a/frontend/src/app/(app)/fund/page.tsx b/frontend/src/app/(app)/fund/page.tsx
index df55c4c..2d57529 100644
--- a/frontend/src/app/(app)/fund/page.tsx
+++ b/frontend/src/app/(app)/fund/page.tsx
@@ -400,7 +400,7 @@ export default function FundPage() {
             </div>
             <div>
               <Label>分类</Label>
-              <Select value={formCategory} onValueChange={setFormCategory}>
+              <Select value={formCategory} onValueChange={(v) => { if (v) setFormCategory(v); }}>
                 <SelectTrigger className="mt-1">
                   <SelectValue placeholder="选择分类">{formCategory || "选择分类"}</SelectValue>
                 </SelectTrigger>