diff --git a/docs/api/editor/props.md b/docs/api/editor/props.md
index 6e682296..5536d256 100644
--- a/docs/api/editor/props.md
+++ b/docs/api/editor/props.md
@@ -503,6 +503,32 @@ const renderFunction = async (stage) => {
 </template>
 ```
 
+## iframeSandbox
+
+- **详情：**
+
+  画布 iframe 的 sandbox 属性值，仅 `renderType` 为 `iframe` 时生效。不传或传 `false` 时不设置 sandbox 属性。
+
+  token 用空格分隔，缺哪个 token，画布内对应能力就会静默失效。编辑器自身依赖 `allow-scripts` + `allow-same-origin`（需要读写 iframe 内的 DOM）；组件内需要下载、弹窗、表单提交时，分别要放开 `allow-downloads`、`allow-popups`、`allow-forms` 等。
+
+  注意：
+
+  - 仅在编辑器初始化时读取，运行期修改不会生效。
+  - runtime 与编辑器不同域时，会通过 `srcdoc` 加载，同样受 sandbox 约束；缺少 `allow-same-origin` 会导致编辑器无法访问 iframe 内的 DOM。
+  - `allow-scripts` 与 `allow-same-origin` 同时存在且 iframe 同源时，iframe 内脚本可以移除自身的 sandbox 属性，因此该配置只用于限制 `allow-top-navigation`、`allow-popups` 等能力，不能作为安全隔离手段。
+
+- **默认值：** `undefined`（不设置 sandbox 属性）
+
+- **类型：** `string | false`
+
+- **示例：**
+
+```html
+<template>
+  <m-editor iframe-sandbox="allow-scripts allow-same-origin allow-downloads"></m-editor>
+</template>
+```
+
 ## autoScrollIntoView
 
 - **详情：**
diff --git a/packages/editor/src/Editor.vue b/packages/editor/src/Editor.vue
index 1ebc00d5..5509f1f7 100644
--- a/packages/editor/src/Editor.vue
+++ b/packages/editor/src/Editor.vue
@@ -224,6 +224,7 @@ const stageOptions: StageOptions = {
   containerHighlightAddOnly: props.containerHighlightAddOnly,
   disabledDragStart: props.disabledDragStart,
   renderType: props.renderType,
+  iframeSandbox: props.iframeSandbox,
   guidesOptions: props.guidesOptions,
   disabledMultiSelect: props.disabledMultiSelect,
   alwaysMultiSelect: props.alwaysMultiSelect,
diff --git a/packages/editor/src/editorProps.ts b/packages/editor/src/editorProps.ts
index fa4b9595..d64c2db5 100644
--- a/packages/editor/src/editorProps.ts
+++ b/packages/editor/src/editorProps.ts
@@ -62,6 +62,16 @@ export interface EditorProps {
   runtimeUrl?: string;
   /** 是用iframe渲染还是直接渲染 */
   renderType?: RenderType;
+  /**
+   * 画布 iframe 的 sandbox 属性值（仅 iframe 渲染时生效）
+   *
+   * - 不传 / `false`：不设置 sandbox 属性（默认）
+   * - 字符串：原样写入，token 空格分隔，如 `'allow-scripts allow-same-origin allow-downloads'`
+   *
+   * 需要注意编辑器自身依赖 `allow-scripts` + `allow-same-origin`（读写 iframe 内 DOM），
+   * 其余 token（`allow-downloads`、`allow-popups`、`allow-forms` 等）按业务需要放开。
+   */
+  iframeSandbox?: string | false;
   /** 选中时是否自动滚动到可视区域 */
   autoScrollIntoView?: boolean;
   /** 组件的属性配置表单的dsl */
diff --git a/packages/editor/src/hooks/use-stage.ts b/packages/editor/src/hooks/use-stage.ts
index 0bece9e0..c2724c94 100644
--- a/packages/editor/src/hooks/use-stage.ts
+++ b/packages/editor/src/hooks/use-stage.ts
@@ -31,6 +31,7 @@ export const useStage = (stageOptions: StageOptions) => {
     containerHighlightAddOnly: stageOptions.containerHighlightAddOnly,
     disabledDragStart: stageOptions.disabledDragStart,
     renderType: stageOptions.renderType,
+    iframeSandbox: stageOptions.iframeSandbox,
     canSelect: (el, event, stop) => {
       if (!stageOptions.canSelect) return true;
 
diff --git a/packages/editor/src/type.ts b/packages/editor/src/type.ts
index 2237870f..8aac1968 100644
--- a/packages/editor/src/type.ts
+++ b/packages/editor/src/type.ts
@@ -221,6 +221,8 @@ export interface StageOptions {
    */
   disabledFlashTip?: boolean;
   zoom?: number;
+  /** 画布 iframe 的 sandbox 属性值，不传 / false 表示不设置，见 @tmagic/stage 的 StageRenderConfig.iframeSandbox */
+  iframeSandbox?: string | false;
   /** 画布双击前的钩子函数，返回 false 则阻止默认的双击行为 */
   beforeDblclick?: (event: MouseEvent) => Promise<boolean | void> | boolean | void;
 }
diff --git a/packages/stage/src/StageCore.ts b/packages/stage/src/StageCore.ts
index 6d858a73..16456fd1 100644
--- a/packages/stage/src/StageCore.ts
+++ b/packages/stage/src/StageCore.ts
@@ -71,6 +71,7 @@ export default class StageCore extends EventEmitter {
       runtimeUrl: config.runtimeUrl,
       zoom: config.zoom,
       renderType: config.renderType,
+      iframeSandbox: config.iframeSandbox,
       customizedRender: async (): Promise<HTMLElement | null | void> => {
         if (this?.customizedRender) {
           return await this.customizedRender(this);
diff --git a/packages/stage/src/StageRender.ts b/packages/stage/src/StageRender.ts
index 9b24abad..717f121e 100644
--- a/packages/stage/src/StageRender.ts
+++ b/packages/stage/src/StageRender.ts
@@ -38,13 +38,21 @@ export default class StageRender extends EventEmitter {
   private runtimeUrl?: string;
   private zoom = DEFAULT_ZOOM;
   private renderType: RenderType;
+  private iframeSandbox?: string | false;
   private customizedRender?: () => Promise<HTMLElement | null | void>;
 
-  constructor({ runtimeUrl, zoom, customizedRender, renderType = RenderType.IFRAME }: StageRenderConfig) {
+  constructor({
+    runtimeUrl,
+    zoom,
+    customizedRender,
+    renderType = RenderType.IFRAME,
+    iframeSandbox,
+  }: StageRenderConfig) {
     super();
 
     this.renderType = renderType;
     this.runtimeUrl = runtimeUrl || '';
+    this.iframeSandbox = iframeSandbox;
     this.customizedRender = customizedRender;
     this.setZoom(zoom);
 
@@ -250,6 +258,11 @@ export default class StageRender extends EventEmitter {
 
   private createIframe(): HTMLIFrameElement {
     this.iframe = globalThis.document.createElement('iframe');
+    // 沙箱由使用方配置（空字符串也是合法取值，表示放开全部限制），必须在设置 src 之前写入，
+    // 否则首次导航不受沙箱约束
+    if (typeof this.iframeSandbox === 'string') {
+      this.iframe.setAttribute('sandbox', this.iframeSandbox);
+    }
     // 同源，直接加载
     this.iframe.src = this.runtimeUrl && isSameDomain(this.runtimeUrl) ? this.runtimeUrl : '';
     this.iframe.style.cssText = `
diff --git a/packages/stage/src/types.ts b/packages/stage/src/types.ts
index 4e6f5d03..b99fdd0e 100644
--- a/packages/stage/src/types.ts
+++ b/packages/stage/src/types.ts
@@ -104,6 +104,8 @@ export interface StageCoreConfig {
    * 用于从图层树、面包屑等外部选中组件时，帮助用户快速定位组件在画布中的位置。
    */
   disabledFlashTip?: boolean;
+  /** 画布 iframe 的 sandbox 属性值，见 StageRenderConfig.iframeSandbox */
+  iframeSandbox?: string | false;
 }
 
 export interface ActionManagerConfig {
@@ -153,6 +155,17 @@ export interface StageRenderConfig {
   runtimeUrl?: string;
   zoom: number | undefined;
   renderType?: RenderType;
+  /**
+   * iframe 渲染时给画布 iframe 设置的 sandbox 属性值
+   *
+   * - 不传 / `false`：不设置 sandbox 属性（默认，与未引入该配置前行为一致）
+   * - 字符串：原样写入 sandbox 属性，token 用空格分隔，如
+   *   `'allow-scripts allow-same-origin allow-forms allow-popups allow-downloads'`
+   *
+   * 注意：沙箱缺哪个 token，iframe 内对应能力就会静默失效（下载、弹窗、表单提交等），
+   * 编辑器自身需要 `allow-scripts` + `allow-same-origin`，否则画布不可用。
+   */
+  iframeSandbox?: string | false;
   customizedRender?: () => Promise<HTMLElement | null | void>;
 }
 
diff --git a/packages/stage/tests/unit/StageCore.spec.ts b/packages/stage/tests/unit/StageCore.spec.ts
index 26133389..c71b4787 100644
--- a/packages/stage/tests/unit/StageCore.spec.ts
+++ b/packages/stage/tests/unit/StageCore.spec.ts
@@ -100,6 +100,21 @@ describe('StageCore', () => {
     stage.destroy();
   });
 
+  test('iframeSandbox 透传到 iframe 的 sandbox 属性', async () => {
+    const host = globalThis.document.createElement('div');
+    globalThis.document.body.appendChild(host);
+    const sandbox = 'allow-scripts allow-same-origin';
+    const stage = new StageCore({
+      renderType: RenderType.IFRAME,
+      runtimeUrl: '',
+      iframeSandbox: sandbox,
+      disabledRule: true,
+    });
+    await stage.mount(host);
+    expect(host.querySelector('iframe')!.getAttribute('sandbox')).toBe(sandbox);
+    stage.destroy();
+  });
+
   test('select 选中节点并触发 flash', async () => {
     const { host, page, stage } = createStage();
     await stage.mount(host);
diff --git a/packages/stage/tests/unit/StageRender.spec.ts b/packages/stage/tests/unit/StageRender.spec.ts
index 2a31e4bd..ff468b6f 100644
--- a/packages/stage/tests/unit/StageRender.spec.ts
+++ b/packages/stage/tests/unit/StageRender.spec.ts
@@ -133,6 +133,47 @@ describe('StageRender - NATIVE', () => {
     renderer.destroy();
   });
 
+  test('未配置 iframeSandbox 时不设置 sandbox 属性', async () => {
+    const host = globalThis.document.createElement('div');
+    globalThis.document.body.appendChild(host);
+    const renderer = new StageRender({ renderType: RenderType.IFRAME, runtimeUrl: '' });
+    await renderer.mount(host);
+
+    expect(host.querySelector('iframe')!.hasAttribute('sandbox')).toBe(false);
+    renderer.destroy();
+  });
+
+  test('iframeSandbox 为 false 时不设置 sandbox 属性', async () => {
+    const host = globalThis.document.createElement('div');
+    globalThis.document.body.appendChild(host);
+    const renderer = new StageRender({ renderType: RenderType.IFRAME, runtimeUrl: '', iframeSandbox: false });
+    await renderer.mount(host);
+
+    expect(host.querySelector('iframe')!.hasAttribute('sandbox')).toBe(false);
+    renderer.destroy();
+  });
+
+  test('iframeSandbox 配置的 token 原样写入 sandbox 属性', async () => {
+    const host = globalThis.document.createElement('div');
+    globalThis.document.body.appendChild(host);
+    const sandbox = 'allow-scripts allow-same-origin allow-downloads';
+    const renderer = new StageRender({ renderType: RenderType.IFRAME, runtimeUrl: '', iframeSandbox: sandbox });
+    await renderer.mount(host);
+
+    expect(host.querySelector('iframe')!.getAttribute('sandbox')).toBe(sandbox);
+    renderer.destroy();
+  });
+
+  test('空字符串 iframeSandbox 也写入 sandbox 属性（放开全部限制）', async () => {
+    const host = globalThis.document.createElement('div');
+    globalThis.document.body.appendChild(host);
+    const renderer = new StageRender({ renderType: RenderType.IFRAME, runtimeUrl: '', iframeSandbox: '' });
+    await renderer.mount(host);
+
+    expect(host.querySelector('iframe')!.getAttribute('sandbox')).toBe('');
+    renderer.destroy();
+  });
+
   test('getElementImage 找到元素时调用 snapdom', async () => {
     const page = globalThis.document.createElement('div');
     setIdToEl()(page, 'img-node');
diff --git a/playground/src/pages/Editor.vue b/playground/src/pages/Editor.vue
index 5c8e2ee4..3bdf3d0b 100644
--- a/playground/src/pages/Editor.vue
+++ b/playground/src/pages/Editor.vue
@@ -5,6 +5,7 @@
       ref="editor"
       :menu="menu"
       :runtime-url="runtimeUrl"
+      :iframe-sandbox="iframeSandbox"
       :props-configs="propsConfigs"
       :props-values="propsValues"
       :event-method-list="eventMethodList"
@@ -83,6 +84,22 @@ uiService.set('propsPanelSize', 'default');
 const datasourceList: DatasourceTypeOption[] = [];
 const runtimeUrl = `${VITE_RUNTIME_PATH}/playground/index.html`;
 
+/**
+ * 画布 iframe 的 sandbox 配置（较宽松的演示值，非推荐值），演示「是否加、加哪些 token」由使用方决定：
+ * - 改成 `false` 即不设置 sandbox 属性（与未配置时一致）
+ * - 画布需要 allow-scripts + allow-same-origin（编辑器要读写 iframe 内的 DOM），
+ *   allow-downloads 用于画布内组件的下载，其余 token 保留表单提交、弹窗、新窗口打开能力
+ */
+const iframeSandbox = [
+  'allow-downloads',
+  'allow-forms',
+  'allow-modals',
+  'allow-popups',
+  'allow-popups-to-escape-sandbox',
+  'allow-same-origin',
+  'allow-scripts',
+].join(' ');
+
 const { propsValues, propsConfigs, eventMethodList, datasourceConfigs, datasourceValues, datasourceEventMethodList } =
   useEditorRes();
 const { contentMenuData } = useEditorContentMenuData();