diff --git a/tools/level-builder/build_in_editor.py b/tools/level-builder/build_in_editor.py
new file mode 100644
index 0000000..787a3f2
--- /dev/null
+++ b/tools/level-builder/build_in_editor.py
@@ -0,0 +1,67 @@
+"""UE5 编辑器内白模关卡构建启动脚本。
+
+使用方式：
+  1. 打开 UE5 编辑器
+  2. Window → Developer Tools → Output Log
+  3. 左下角下拉菜单切换到 "Python"
+  4. 粘贴执行:
+     exec(open(r"<项目绝对路径>/tools/level-builder/build_in_editor.py").read())
+
+  或者:
+     File → Execute Python Script → 选择此文件
+"""
+
+import sys
+from pathlib import Path
+
+# ---- 配置 ----
+PROJECT_ROOT = Path(r"E:/MiceCola/work/ChildHood")
+LEVEL_JSON = PROJECT_ROOT / "tools/level-builder/output/level_v01.json"
+# ---- 配置结束 ----
+
+# 将项目路径加入 sys.path
+TOOLS_DIR = PROJECT_ROOT / "tools"
+LEVEL_BUILDER_DIR = PROJECT_ROOT / "tools/level-builder"
+for p in [str(PROJECT_ROOT), str(TOOLS_DIR), str(LEVEL_BUILDER_DIR)]:
+    if p not in sys.path:
+        sys.path.insert(0, p)
+
+# 检查 unreal 模块
+try:
+    import unreal
+except ImportError:
+    print("[错误] 未检测到 unreal 模块，此脚本必须在 UE5 编辑器 Python 环境中运行！")
+    print("  请在 Output Log 中切换到 Python 控制台后执行。")
+    raise
+
+# 检查 JSON 文件存在
+if not LEVEL_JSON.exists():
+    print(f"[错误] JSON 文件不存在: {LEVEL_JSON}")
+    print("  请先在命令行运行: python main.py parse -i ../../docs/technical/关卡-v01-搭建指南.md")
+    raise FileNotFoundError(str(LEVEL_JSON))
+
+# 导入并执行构建
+from builder.scene_builder import build_level
+
+print(f"[LevelBuilder] 项目根目录: {PROJECT_ROOT}")
+print(f"[LevelBuilder] JSON 数据: {LEVEL_JSON}")
+print(f"[LevelBuilder] 开始构建...")
+
+build_log = build_level(
+    json_path=str(LEVEL_JSON),
+    clear_existing=True,
+    zones=None,  # 构建所有区域；如仅需部分区域改为 ["Z1", "Z3"]
+)
+
+if build_log:
+    ok = sum(1 for b in build_log if b.get("status") == "ok")
+    failed = sum(1 for b in build_log if b.get("status") != "ok")
+    print(f"\n[LevelBuilder] ========== 构建结果 ==========")
+    print(f"  成功: {ok}")
+    print(f"  失败: {failed}")
+    print(f"  总计: {len(build_log)}")
+    if failed > 0:
+        print(f"\n  失败列表:")
+        for b in build_log:
+            if b.get("status") != "ok":
+                print(f"    ❌ {b.get('name', '?')}: {b.get('reason', '未知错误')}")