diff --git a/src/components/quality/InspectionManagement/InspectionDetail.tsx b/src/components/quality/InspectionManagement/InspectionDetail.tsx
index 39ffc3a1..17aed631 100644
--- a/src/components/quality/InspectionManagement/InspectionDetail.tsx
+++ b/src/components/quality/InspectionManagement/InspectionDetail.tsx
@@ -21,6 +21,7 @@ import {
   Plus,
   Trash2,
   ClipboardCheck,
+  Pencil,
 } from 'lucide-react';
 import { Button } from '@/components/ui/button';
 import { Badge } from '@/components/ui/badge';
@@ -121,12 +122,15 @@ const EMPTY_FORM: InspectionFormData = {
 export function InspectionDetail({ id }: InspectionDetailProps) {
   const router = useRouter();
   const searchParams = useSearchParams();
-  const isEditMode = searchParams.get('mode') === 'edit';
+  const isEditModeParam = searchParams.get('mode') === 'edit';
 
   // 상세 데이터
   const [inspection, setInspection] = useState<ProductInspection | null>(null);
   const [isLoading, setIsLoading] = useState(true);
 
+  // 완료 상태면 편집 모드 강제 해제
+  const isEditMode = isEditModeParam && inspection?.status !== '완료';
+
   // 수정 폼 데이터
   const [formData, setFormData] = useState<InspectionFormData>(EMPTY_FORM);
 
@@ -809,7 +813,8 @@ export function InspectionDetail({ id }: InspectionDetailProps) {
       );
     }
 
-    // View 모드: 검사제품요청서 보기, 제품검사하기, 검사 완료 버튼 표시
+    // View 모드: 검사제품요청서 보기, 제품검사하기, 수정(완료시 disabled), 검사 완료
+    const isCompleted = inspection.status === '완료';
     return (
       <>
         <Button variant="outline" size="sm" onClick={() => setRequestDocOpen(true)}>
@@ -820,19 +825,30 @@ export function InspectionDetail({ id }: InspectionDetailProps) {
           <PlayCircle className="w-4 h-4 md:mr-2" />
           <span className="hidden md:inline">제품검사하기</span>
         </Button>
-        {inspection.status !== '완료' && (
-          <Button
-            size="sm"
-            className="bg-green-600 hover:bg-green-700"
-            onClick={() => setShowCompleteDialog(true)}
-          >
-            <CheckCircle2 className="w-4 h-4 md:mr-2" />
-            <span className="hidden md:inline">검사 완료</span>
+        {isCompleted && (
+          <Button size="sm" disabled title="검사완료된 건은 수정할 수 없습니다.">
+            <Pencil className="w-4 h-4 md:mr-2" />
+            <span className="hidden md:inline">수정</span>
           </Button>
         )}
+        {!isCompleted && (() => {
+          const hasIncomplete = !inspectionStats || inspectionStats.none > 0 || inspectionStats.inProgress > 0;
+          return (
+            <Button
+              size="sm"
+              className="bg-green-600 hover:bg-green-700"
+              disabled={hasIncomplete}
+              onClick={() => setShowCompleteDialog(true)}
+              title={hasIncomplete ? (!inspectionStats ? '검사 대상이 없습니다.' : `미검사 ${inspectionStats.none}건, 진행중 ${inspectionStats.inProgress}건이 남아있습니다.`) : ''}
+            >
+              <CheckCircle2 className="w-4 h-4 md:mr-2" />
+              <span className="hidden md:inline">검사 완료</span>
+            </Button>
+          );
+        })()}
       </>
     );
-  }, [isEditMode, inspection]);
+  }, [isEditMode, inspection, inspectionStats]);
 
   // ===== View 모드 렌더링 =====
   const renderViewContent = useCallback(() => {
@@ -1295,11 +1311,12 @@ export function InspectionDetail({ id }: InspectionDetailProps) {
   const mode = isEditMode ? 'edit' : 'view';
 
   const dynamicConfig = useMemo(() => {
-    if (isEditMode) {
-      return { ...inspectionConfig, title: '제품검사' };
+    const base = isEditMode ? { ...inspectionConfig, title: '제품검사' } : inspectionConfig;
+    if (inspection?.status === '완료') {
+      return { ...base, permissions: { ...base.permissions, canEdit: false } };
     }
-    return inspectionConfig;
-  }, [isEditMode]);
+    return base;
+  }, [isEditMode, inspection?.status]);
 
   // 데이터 없음
   if (!isLoading && !inspection) {
@@ -1322,7 +1339,7 @@ export function InspectionDetail({ id }: InspectionDetailProps) {
         itemId={id}
         isLoading={isLoading}
         onSubmit={handleSubmit}
-        onEdit={handleEdit}
+        onEdit={inspection?.status !== '완료' ? handleEdit : undefined}
         headerActions={headerActions}
         renderView={() => renderViewContent()}
         renderForm={() => renderFormContent()}