diff --git a/app/Models/Orders/Order.php b/app/Models/Orders/Order.php
index 434c834..647ea4b 100644
--- a/app/Models/Orders/Order.php
+++ b/app/Models/Orders/Order.php
@@ -161,6 +161,22 @@ public function items(): HasMany
         return $this->hasMany(OrderItem::class)->orderBy('sort_order');
     }
 
+    /**
+     * 수주 노드 (전체, depth/sort_order 순)
+     */
+    public function nodes(): HasMany
+    {
+        return $this->hasMany(OrderNode::class)->orderBy('depth')->orderBy('sort_order');
+    }
+
+    /**
+     * 수주 루트 노드 (parent_id가 NULL인 최상위)
+     */
+    public function rootNodes(): HasMany
+    {
+        return $this->hasMany(OrderNode::class)->whereNull('parent_id')->orderBy('sort_order');
+    }
+
     /**
      * 수주 이력
      */
diff --git a/app/Models/Orders/OrderItem.php b/app/Models/Orders/OrderItem.php
index 11932e7..7b1762c 100644
--- a/app/Models/Orders/OrderItem.php
+++ b/app/Models/Orders/OrderItem.php
@@ -26,6 +26,7 @@ class OrderItem extends Model
     protected $fillable = [
         'tenant_id',
         'order_id',
+        'order_node_id',
         'quote_id',
         'quote_item_id',
         'serial_no',
@@ -82,6 +83,14 @@ public function order(): BelongsTo
         return $this->belongsTo(Order::class);
     }
 
+    /**
+     * 수주 노드 (개소/구역/층 등)
+     */
+    public function node(): BelongsTo
+    {
+        return $this->belongsTo(OrderNode::class, 'order_node_id');
+    }
+
     /**
      * 품목 마스터
      */
diff --git a/app/Models/Orders/OrderNode.php b/app/Models/Orders/OrderNode.php
new file mode 100644
index 0000000..5b967d7
--- /dev/null
+++ b/app/Models/Orders/OrderNode.php
@@ -0,0 +1,127 @@
+<?php
+
+namespace App\Models\Orders;
+
+use App\Traits\Auditable;
+use App\Traits\BelongsToTenant;
+use Illuminate\Database\Eloquent\Model;
+use Illuminate\Database\Eloquent\Relations\BelongsTo;
+use Illuminate\Database\Eloquent\Relations\HasMany;
+use Illuminate\Database\Eloquent\SoftDeletes;
+
+/**
+ * 수주 노드 (Order Nodes)
+ *
+ * N-depth 자기참조 트리 구조로 수주 하위 단위(개소/구역/층/실/공정 등)를 관리.
+ * 고정 코어 컬럼(통계/집계용) + options JSON(유형별 동적 속성) 하이브리드 패턴.
+ */
+class OrderNode extends Model
+{
+    use Auditable, BelongsToTenant, SoftDeletes;
+
+    protected $table = 'order_nodes';
+
+    // 상태 코드 (Order와 동일 체계)
+    public const STATUS_PENDING = 'PENDING';
+
+    public const STATUS_CONFIRMED = 'CONFIRMED';
+
+    public const STATUS_IN_PRODUCTION = 'IN_PRODUCTION';
+
+    public const STATUS_PRODUCED = 'PRODUCED';
+
+    public const STATUS_SHIPPED = 'SHIPPED';
+
+    public const STATUS_COMPLETED = 'COMPLETED';
+
+    public const STATUS_CANCELLED = 'CANCELLED';
+
+    protected $fillable = [
+        'tenant_id',
+        'order_id',
+        'parent_id',
+        'node_type',
+        'code',
+        'name',
+        'status_code',
+        'quantity',
+        'unit_price',
+        'total_price',
+        'options',
+        'depth',
+        'sort_order',
+        'created_by',
+        'updated_by',
+        'deleted_by',
+    ];
+
+    protected $casts = [
+        'quantity' => 'integer',
+        'unit_price' => 'decimal:2',
+        'total_price' => 'decimal:2',
+        'options' => 'array',
+        'depth' => 'integer',
+        'sort_order' => 'integer',
+        'created_at' => 'datetime',
+        'updated_at' => 'datetime',
+        'deleted_at' => 'datetime',
+    ];
+
+    // ---- 트리 관계 ----
+
+    /**
+     * 상위 노드
+     */
+    public function parent(): BelongsTo
+    {
+        return $this->belongsTo(self::class, 'parent_id');
+    }
+
+    /**
+     * 하위 노드
+     */
+    public function children(): HasMany
+    {
+        return $this->hasMany(self::class, 'parent_id')->orderBy('sort_order');
+    }
+
+    // ---- 비즈니스 관계 ----
+
+    /**
+     * 수주 마스터
+     */
+    public function order(): BelongsTo
+    {
+        return $this->belongsTo(Order::class);
+    }
+
+    /**
+     * 해당 노드에 속한 수주 품목
+     */
+    public function items(): HasMany
+    {
+        return $this->hasMany(OrderItem::class, 'order_node_id');
+    }
+
+    // ---- 트리 헬퍼 ----
+
+    public function isRoot(): bool
+    {
+        return $this->parent_id === null;
+    }
+
+    public function isLeaf(): bool
+    {
+        return $this->children()->count() === 0;
+    }
+
+    /**
+     * 하위 노드 포함 전체 트리 재귀 로드
+     */
+    public function scopeWithRecursiveChildren($query)
+    {
+        return $query->with(['children' => function ($q) {
+            $q->orderBy('sort_order')->with('children', 'items');
+        }, 'items']);
+    }
+}
diff --git a/database/migrations/2026_02_06_200000_create_order_nodes_table.php b/database/migrations/2026_02_06_200000_create_order_nodes_table.php
new file mode 100644
index 0000000..45f4788
--- /dev/null
+++ b/database/migrations/2026_02_06_200000_create_order_nodes_table.php
@@ -0,0 +1,56 @@
+<?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::create('order_nodes', function (Blueprint $table) {
+            $table->id()->comment('ID');
+            $table->foreignId('tenant_id')->comment('테넌트 ID');
+            $table->foreignId('order_id')->comment('수주 ID');
+
+            // ---- 트리 구조 ----
+            $table->foreignId('parent_id')->nullable()->comment('상위 노드 ID (NULL=루트)');
+
+            // ---- 고정 코어 (통계/집계용) ----
+            $table->string('node_type', 50)->comment('노드 유형 (location, zone, floor, room, process...)');
+            $table->string('code', 100)->comment('식별 코드');
+            $table->string('name', 200)->comment('표시명');
+            $table->string('status_code', 30)->default('PENDING')
+                ->comment('상태 (PENDING/CONFIRMED/IN_PRODUCTION/PRODUCED/SHIPPED/COMPLETED/CANCELLED)');
+            $table->integer('quantity')->default(1)->comment('수량');
+            $table->decimal('unit_price', 15, 2)->default(0)->comment('단가');
+            $table->decimal('total_price', 15, 2)->default(0)->comment('합계');
+
+            // ---- 유연 확장 (유형별 상세) ----
+            $table->json('options')->nullable()->comment('유형별 동적 속성 JSON');
+
+            // ---- 정렬 ----
+            $table->integer('depth')->default(0)->comment('트리 깊이 (0=루트)');
+            $table->integer('sort_order')->default(0)->comment('정렬 순서');
+
+            // ---- 감사 ----
+            $table->foreignId('created_by')->nullable()->comment('생성자 ID');
+            $table->foreignId('updated_by')->nullable()->comment('수정자 ID');
+            $table->foreignId('deleted_by')->nullable()->comment('삭제자 ID');
+            $table->timestamps();
+            $table->softDeletes();
+
+            // ---- 인덱스 ----
+            $table->index('tenant_id');
+            $table->index('parent_id');
+            $table->index(['order_id', 'depth', 'sort_order']);
+            $table->index(['order_id', 'node_type']);
+            $table->index(['tenant_id', 'node_type', 'status_code']); // 통계용
+        });
+    }
+
+    public function down(): void
+    {
+        Schema::dropIfExists('order_nodes');
+    }
+};
diff --git a/database/migrations/2026_02_06_200001_add_order_node_id_to_order_items_table.php b/database/migrations/2026_02_06_200001_add_order_node_id_to_order_items_table.php
new file mode 100644
index 0000000..af42b23
--- /dev/null
+++ b/database/migrations/2026_02_06_200001_add_order_node_id_to_order_items_table.php
@@ -0,0 +1,27 @@
+<?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('order_items', function (Blueprint $table) {
+            $table->foreignId('order_node_id')
+                ->nullable()
+                ->after('order_id')
+                ->comment('수주 노드 ID (order_nodes)');
+            $table->index('order_node_id');
+        });
+    }
+
+    public function down(): void
+    {
+        Schema::table('order_items', function (Blueprint $table) {
+            $table->dropIndex(['order_node_id']);
+            $table->dropColumn('order_node_id');
+        });
+    }
+};