diff --git a/web/src/pages/app/modules/models.ts b/web/src/pages/app/modules/models.ts
index a41fa8b..ebc8250 100644
--- a/web/src/pages/app/modules/models.ts
+++ b/web/src/pages/app/modules/models.ts
@@ -22,11 +22,31 @@ type UploadModelPayload = {
 };
 
 const defaultOperationTree = JSON.stringify({ OperationTree: "[]" });
+const requestSceneModelMessageType = "DMT_MODEL_LIBRARY_REQUEST_SCENE_MODEL";
+const sceneModelMessageType = "DMT_MODEL_LIBRARY_SCENE_MODEL";
+const sceneModelErrorMessageType = "DMT_MODEL_LIBRARY_SCENE_MODEL_ERROR";
+
+type SceneModelMessagePayload = {
+  modelName?: string;
+  fileName?: string;
+  modelBuffer?: ArrayBuffer;
+  operationTreeJson?: string;
+};
+
+type SceneModelMessage = {
+  type?: string;
+  payload?: SceneModelMessagePayload;
+  message?: string;
+};
+
 let dictionariesLoaded = false;
 let dictionariesLoading: Promise<void> | null = null;
+let sceneModelBridgeBound = false;
 
 export function bindModelActions() {
   const isAdmin = getCurrentUser()?.role === "admin";
+  bindSceneModelBridge();
+  ensureImportSceneModelButton();
   if (isAdmin) {
     document.querySelector("#manageUsersBtn")?.addEventListener("click", async () => {
       try {
@@ -242,8 +262,90 @@ function syncSelectedFolderActions() {
   const canWrite = Boolean(currentFolder?.permissions.write);
   const addModelBtn = document.querySelector<HTMLButtonElement>("#addModelBtn");
   const addProcessModelBtn = document.querySelector<HTMLButtonElement>("#addProcessModelBtn");
+  const importSceneModelBtn = document.querySelector<HTMLButtonElement>("#importSceneModelBtn");
   if (addModelBtn) addModelBtn.hidden = !canWrite;
   if (addProcessModelBtn) addProcessModelBtn.hidden = !canWrite;
+  if (importSceneModelBtn) importSceneModelBtn.hidden = !canWrite;
+}
+
+function ensureImportSceneModelButton() {
+  if (document.querySelector("#importSceneModelBtn")) return;
+  const addModelBtn = document.querySelector<HTMLButtonElement>("#addModelBtn");
+  if (!addModelBtn) return;
+  const button = document.createElement("button");
+  button.id = "importSceneModelBtn";
+  button.type = "button";
+  button.textContent = "导入场景模型";
+  button.addEventListener("click", requestSceneModelImport);
+  addModelBtn.insertAdjacentElement("afterend", button);
+}
+
+function bindSceneModelBridge() {
+  if (sceneModelBridgeBound) return;
+  sceneModelBridgeBound = true;
+  window.addEventListener("message", (event) => {
+    const data = event.data as SceneModelMessage;
+    if (data?.type !== sceneModelMessageType && data?.type !== sceneModelErrorMessageType) return;
+    if (!isAllowedParentOrigin(event.origin)) return;
+    void handleSceneModelMessage(data);
+  });
+}
+
+function requestSceneModelImport() {
+  if (!appState.selectedFolderId) {
+    notify("请先选择目录");
+    return;
+  }
+  if (!window.parent || window.parent === window) {
+    notify("请在 DMT 主程序中使用导入场景模型");
+    return;
+  }
+  window.parent.postMessage({
+    type: requestSceneModelMessageType
+  }, resolveParentOrigin());
+  notify("已请求主程序导出当前选中模型");
+}
+
+async function handleSceneModelMessage(data: SceneModelMessage) {
+  if (data.type === sceneModelErrorMessageType) {
+    notifyError(data.message || "主程序导出模型失败");
+    return;
+  }
+
+  const payload = data.payload;
+  if (!payload?.modelBuffer) {
+    notifyError("主程序返回的模型数据为空");
+    return;
+  }
+
+  const fileName = ensureGlbFileName(payload.fileName || payload.modelName || "scene-model.glb");
+  const file = new File([payload.modelBuffer], fileName, { type: "model/gltf-binary" });
+  await openProcessModelUploadDialog({
+    file,
+    modelName: payload.modelName || modelNameFromFile(fileName),
+    operationTreeJson: payload.operationTreeJson || defaultOperationTree
+  });
+}
+
+function isAllowedParentOrigin(origin: string) {
+  const expectedOrigin = resolveParentOrigin();
+  return expectedOrigin === "*" || origin === expectedOrigin;
+}
+
+function resolveParentOrigin() {
+  try {
+    const meta = import.meta as ImportMeta & { env?: Record<string, string | undefined> };
+    const configuredOrigin = meta.env?.VITE_DMT_PARENT_ORIGIN;
+    if (configuredOrigin) return configuredOrigin;
+    if (document.referrer) return new URL(document.referrer).origin;
+  } catch {
+    return "*";
+  }
+  return "*";
+}
+
+function ensureGlbFileName(fileName: string) {
+  return fileName.toLowerCase().endsWith(".glb") ? fileName : `${fileName}.glb`;
 }
 
 export async function uploadModelToBackend(payload: UploadModelPayload) {