diff --git a/frontend/src/app/(app)/admin/members/page.tsx b/frontend/src/app/(app)/admin/members/page.tsx
index cb5ea01..ac7b3fb 100644
--- a/frontend/src/app/(app)/admin/members/page.tsx
+++ b/frontend/src/app/(app)/admin/members/page.tsx
@@ -1035,7 +1035,12 @@ export default function MembersPage() {
                             角色决定是否具备跨班管理能力。老师和同学都可以在当前班级里继续配置班委身份。
                           </p>
                         </div>
-                        <Select value={memberRoleValue} onValueChange={setMemberRoleValue}>
+                        <Select
+                          value={memberRoleValue}
+                          onValueChange={(value) => {
+                            if (value) setMemberRoleValue(value);
+                          }}
+                        >
                           <SelectTrigger className="w-full">
                             <SelectValue>
                               {ROLES[memberRoleValue as keyof typeof ROLES] || memberRoleValue}
diff --git a/frontend/src/app/(app)/profile/page.tsx b/frontend/src/app/(app)/profile/page.tsx
index 14faaf9..3f9ff42 100644
--- a/frontend/src/app/(app)/profile/page.tsx
+++ b/frontend/src/app/(app)/profile/page.tsx
@@ -194,7 +194,12 @@ export default function ProfilePage() {
                     </button>
                   )}
                 </div>
-                <Select value={industry} onValueChange={setIndustry}>
+                <Select
+                  value={industry}
+                  onValueChange={(value) => {
+                    setIndustry(value ?? "");
+                  }}
+                >
                   <SelectTrigger>
                     <SelectValue>{industry || "选择行业"}</SelectValue>
                   </SelectTrigger>