diff --git a/frontend/src/app/distribution/_components/DistributionEditPage.tsx b/frontend/src/app/distribution/_components/DistributionEditPage.tsx
index 66682a8..e217673 100644
--- a/frontend/src/app/distribution/_components/DistributionEditPage.tsx
+++ b/frontend/src/app/distribution/_components/DistributionEditPage.tsx
@@ -534,8 +534,8 @@ export default function DistributionEditPage({ planId }: Props) {
                   <div className="space-y-1">
                     {unassignedFields.map(fi => (
                       <div key={fi.id} className="flex items-center gap-2 text-sm">
-                        <span className="text-gray-800 font-medium w-32 truncate">{fi.name}</span>
-                        <span className="text-gray-400 text-xs w-16 text-right">{fi.area_tan}反</span>
+                        <span className="text-gray-800 font-medium flex-1 min-w-0 truncate" title={fi.name}>{fi.name}</span>
+                        <span className="text-gray-400 text-xs w-16 shrink-0 text-right">{fi.area_tan}反</span>
                         <select
                           defaultValue=""
                           onChange={e => {