diff --git a/app/Http/Requests/Quality/QualityDocumentStoreRequest.php b/app/Http/Requests/Quality/QualityDocumentStoreRequest.php
index ae450f4..14e8cd8 100644
--- a/app/Http/Requests/Quality/QualityDocumentStoreRequest.php
+++ b/app/Http/Requests/Quality/QualityDocumentStoreRequest.php
@@ -31,6 +31,8 @@ public function rules(): array
             'options.material_distributor' => ['nullable', 'array'],
             'options.contractor' => ['nullable', 'array'],
             'options.supervisor' => ['nullable', 'array'],
+            'order_ids' => ['nullable', 'array'],
+            'order_ids.*' => ['integer', 'exists:orders,id'],
         ];
     }
 
diff --git a/app/Http/Requests/Quality/QualityDocumentUpdateRequest.php b/app/Http/Requests/Quality/QualityDocumentUpdateRequest.php
index 58c7a93..763d607 100644
--- a/app/Http/Requests/Quality/QualityDocumentUpdateRequest.php
+++ b/app/Http/Requests/Quality/QualityDocumentUpdateRequest.php
@@ -31,6 +31,14 @@ public function rules(): array
             'options.material_distributor' => ['nullable', 'array'],
             'options.contractor' => ['nullable', 'array'],
             'options.supervisor' => ['nullable', 'array'],
+            'order_ids' => ['nullable', 'array'],
+            'order_ids.*' => ['integer', 'exists:orders,id'],
+            'locations' => ['nullable', 'array'],
+            'locations.*.id' => ['required', 'integer'],
+            'locations.*.post_width' => ['nullable', 'integer'],
+            'locations.*.post_height' => ['nullable', 'integer'],
+            'locations.*.change_reason' => ['nullable', 'string', 'max:500'],
+            'locations.*.inspection_data' => ['nullable', 'array'],
         ];
     }
 }
diff --git a/app/Models/Qualitys/QualityDocumentLocation.php b/app/Models/Qualitys/QualityDocumentLocation.php
index 1f7cecd..311ed9d 100644
--- a/app/Models/Qualitys/QualityDocumentLocation.php
+++ b/app/Models/Qualitys/QualityDocumentLocation.php
@@ -21,10 +21,15 @@ class QualityDocumentLocation extends Model
         'post_width',
         'post_height',
         'change_reason',
+        'inspection_data',
         'document_id',
         'inspection_status',
     ];
 
+    protected $casts = [
+        'inspection_data' => 'array',
+    ];
+
     public function qualityDocument()
     {
         return $this->belongsTo(QualityDocument::class);
diff --git a/app/Services/QualityDocumentService.php b/app/Services/QualityDocumentService.php
index bfcaeb2..1d2336a 100644
--- a/app/Services/QualityDocumentService.php
+++ b/app/Services/QualityDocumentService.php
@@ -4,6 +4,7 @@
 
 use App\Models\Orders\Order;
 use App\Models\Orders\OrderItem;
+use App\Models\Orders\OrderNode;
 use App\Models\Qualitys\PerformanceReport;
 use App\Models\Qualitys\QualityDocument;
 use App\Models\Qualitys\QualityDocumentLocation;
@@ -178,6 +179,10 @@ public function store(array $data)
         $userId = $this->apiUserId();
 
         return DB::transaction(function () use ($data, $tenantId, $userId) {
+            // order_ids는 별도 처리 후 $data에서 제거
+            $orderIds = $data['order_ids'] ?? null;
+            unset($data['order_ids']);
+
             $data['tenant_id'] = $tenantId;
             $data['quality_doc_number'] = QualityDocument::generateDocNumber($tenantId);
             $data['status'] = QualityDocument::STATUS_RECEIVED;
@@ -185,6 +190,11 @@ public function store(array $data)
 
             $doc = QualityDocument::create($data);
 
+            // 수주 연결
+            if (! empty($orderIds)) {
+                $this->syncOrders($doc, $orderIds, $tenantId);
+            }
+
             $this->auditLogger->log(
                 $tenantId,
                 self::AUDIT_TARGET,
@@ -194,7 +204,7 @@ public function store(array $data)
                 $doc->toArray()
             );
 
-            return $this->transformToFrontend($doc->load(['client', 'inspector:id,name', 'creator:id,name']));
+            return $this->transformToFrontend($doc->load(['client', 'inspector:id,name', 'creator:id,name', 'documentOrders.order', 'locations.orderItem.node']));
         });
     }
 
@@ -213,7 +223,12 @@ public function update(int $id, array $data)
 
         $beforeData = $doc->toArray();
 
-        return DB::transaction(function () use ($doc, $data, $userId, $beforeData) {
+        return DB::transaction(function () use ($doc, $data, $userId, $beforeData, $tenantId) {
+            // order_ids, locations는 별도 처리 후 $data에서 제거
+            $orderIds = $data['order_ids'] ?? null;
+            $locations = $data['locations'] ?? null;
+            unset($data['order_ids'], $data['locations']);
+
             $data['updated_by'] = $userId;
 
             // options는 기존 값과 병합
@@ -224,6 +239,16 @@ public function update(int $id, array $data)
 
             $doc->update($data);
 
+            // 수주 동기화 (order_ids가 전달된 경우만)
+            if ($orderIds !== null) {
+                $this->syncOrders($doc, $orderIds, $tenantId);
+            }
+
+            // 개소별 데이터 업데이트 (시공규격, 변경사유, 검사데이터)
+            if (! empty($locations)) {
+                $this->updateLocations($doc->id, $locations);
+            }
+
             $this->auditLogger->log(
                 $doc->tenant_id,
                 self::AUDIT_TARGET,
@@ -233,7 +258,7 @@ public function update(int $id, array $data)
                 $doc->fresh()->toArray()
             );
 
-            return $this->transformToFrontend($doc->load(['client', 'inspector:id,name', 'creator:id,name', 'documentOrders.order', 'locations']));
+            return $this->transformToFrontend($doc->load(['client', 'inspector:id,name', 'creator:id,name', 'documentOrders.order', 'locations.orderItem.node']));
         });
     }
 
@@ -372,6 +397,101 @@ public function availableOrders(array $params): array
             ->toArray();
     }
 
+    /**
+     * 개소별 데이터 업데이트
+     */
+    private function updateLocations(int $docId, array $locations): void
+    {
+        foreach ($locations as $locData) {
+            $locId = $locData['id'] ?? null;
+            if (! $locId) {
+                continue;
+            }
+
+            $location = QualityDocumentLocation::where('quality_document_id', $docId)->find($locId);
+            if (! $location) {
+                continue;
+            }
+
+            $updateData = [];
+            if (array_key_exists('post_width', $locData)) {
+                $updateData['post_width'] = $locData['post_width'];
+            }
+            if (array_key_exists('post_height', $locData)) {
+                $updateData['post_height'] = $locData['post_height'];
+            }
+            if (array_key_exists('change_reason', $locData)) {
+                $updateData['change_reason'] = $locData['change_reason'];
+            }
+            if (array_key_exists('inspection_data', $locData)) {
+                $updateData['inspection_data'] = $locData['inspection_data'];
+            }
+
+            if (! empty($updateData)) {
+                $location->update($updateData);
+            }
+        }
+    }
+
+    /**
+     * 수주 동기화 (update 시 사용)
+     */
+    private function syncOrders(QualityDocument $doc, array $orderIds, int $tenantId): void
+    {
+        $existingOrderIds = QualityDocumentOrder::where('quality_document_id', $doc->id)
+            ->pluck('order_id')
+            ->toArray();
+
+        $toAttach = array_diff($orderIds, $existingOrderIds);
+        $toDetach = array_diff($existingOrderIds, $orderIds);
+
+        // 새로 연결
+        foreach ($toAttach as $orderId) {
+            $order = Order::where('tenant_id', $tenantId)->find($orderId);
+            if (! $order) {
+                continue;
+            }
+
+            $docOrder = QualityDocumentOrder::firstOrCreate([
+                'quality_document_id' => $doc->id,
+                'order_id' => $orderId,
+            ]);
+
+            // 개소(root OrderNode) 기준으로 location 생성
+            $rootNodes = OrderNode::where('order_id', $orderId)
+                ->whereNull('parent_id')
+                ->orderBy('sort_order')
+                ->get();
+
+            foreach ($rootNodes as $node) {
+                // 각 개소의 대표 OrderItem (해당 노드 하위 첫 번째 품목)
+                $representativeItem = OrderItem::where('order_node_id', $node->id)
+                    ->orderBy('sort_order')
+                    ->first();
+
+                if ($representativeItem) {
+                    QualityDocumentLocation::firstOrCreate([
+                        'quality_document_id' => $doc->id,
+                        'quality_document_order_id' => $docOrder->id,
+                        'order_item_id' => $representativeItem->id,
+                    ]);
+                }
+            }
+        }
+
+        // 연결 해제
+        foreach ($toDetach as $orderId) {
+            $docOrder = QualityDocumentOrder::where('quality_document_id', $doc->id)
+                ->where('order_id', $orderId)
+                ->first();
+
+            if ($docOrder) {
+                QualityDocumentLocation::where('quality_document_order_id', $docOrder->id)->delete();
+                $docOrder->delete();
+            }
+        }
+    }
+
     /**
      * 수주 연결
      */
@@ -397,14 +517,24 @@ public function attachOrders(int $docId, array $orderIds)
                     'order_id' => $orderId,
                 ]);
 
-                // 수주 연결 시 개소(order_items)를 locations에 자동 생성
-                $orderItems = OrderItem::where('order_id', $orderId)->get();
-                foreach ($orderItems as $item) {
-                    QualityDocumentLocation::firstOrCreate([
-                        'quality_document_id' => $doc->id,
-                        'quality_document_order_id' => $docOrder->id,
-                        'order_item_id' => $item->id,
-                    ]);
+                // 수주 연결 시 개소(root OrderNode)를 locations에 자동 생성
+                $rootNodes = OrderNode::where('order_id', $orderId)
+                    ->whereNull('parent_id')
+                    ->orderBy('sort_order')
+                    ->get();
+
+                foreach ($rootNodes as $node) {
+                    $representativeItem = OrderItem::where('order_node_id', $node->id)
+                        ->orderBy('sort_order')
+                        ->first();
+
+                    if ($representativeItem) {
+                        QualityDocumentLocation::firstOrCreate([
+                            'quality_document_id' => $doc->id,
+                            'quality_document_order_id' => $docOrder->id,
+                            'order_item_id' => $representativeItem->id,
+                        ]);
+                    }
                 }
             }
 
@@ -535,7 +665,7 @@ private function transformToFrontend(QualityDocument $doc, bool $detail = false)
                 'site_address_detail' => $options['site_address']['detail'] ?? '',
             ];
 
-            // 개소 목록
+            // 개소 목록 (각 location은 1개 root OrderNode = 1개 개소)
             $result['order_items'] = $doc->locations->map(function ($loc) {
                 $orderItem = $loc->orderItem;
                 $node = $orderItem?->node;
@@ -544,9 +674,10 @@ private function transformToFrontend(QualityDocument $doc, bool $detail = false)
 
                 return [
                     'id' => (string) $loc->id,
+                    'order_id' => $order?->id,
                     'order_number' => $order?->order_no ?? '',
                     'site_name' => $order?->site_name ?? '',
-                    'delivery_date' => $order?->delivery_date ?? '',
+                    'delivery_date' => $order?->delivery_date ? $order->delivery_date->format('Y-m-d') : '',
                     'floor' => $orderItem?->floor_code ?? '',
                     'symbol' => $orderItem?->symbol_code ?? '',
                     'order_width' => $nodeOptions['width'] ?? 0,
@@ -554,6 +685,7 @@ private function transformToFrontend(QualityDocument $doc, bool $detail = false)
                     'construction_width' => $loc->post_width ?? 0,
                     'construction_height' => $loc->post_height ?? 0,
                     'change_reason' => $loc->change_reason ?? '',
+                    'inspection_data' => $loc->inspection_data,
                 ];
             })->toArray();
         }
diff --git a/database/migrations/2026_03_06_094425_add_inspection_data_to_quality_document_locations.php b/database/migrations/2026_03_06_094425_add_inspection_data_to_quality_document_locations.php
new file mode 100644
index 0000000..d3e754a
--- /dev/null
+++ b/database/migrations/2026_03_06_094425_add_inspection_data_to_quality_document_locations.php
@@ -0,0 +1,22 @@
+<?php
+
+use Illuminate\Database\Migrations\Migration;
+use Illuminate\Database\Schema\Blueprint;
+use Illuminate\Support\Facades\Schema;
+
+return new class extends Migration
+{
+    public function up(): void
+    {
+        Schema::table('quality_document_locations', function (Blueprint $table) {
+            $table->json('inspection_data')->nullable()->after('change_reason')->comment('검사 데이터 JSON');
+        });
+    }
+
+    public function down(): void
+    {
+        Schema::table('quality_document_locations', function (Blueprint $table) {
+            $table->dropColumn('inspection_data');
+        });
+    }
+};