diff --git a/packages/editor/src/fields/Code.vue b/packages/editor/src/fields/Code.vue
index 9f64417b..b27efa34 100644
--- a/packages/editor/src/fields/Code.vue
+++ b/packages/editor/src/fields/Code.vue
@@ -1,5 +1,6 @@
 <template>
   <MagicCodeEditor
+    v-if="!silentMode"
     :height="config.height"
     :type="diffMode ? 'diff' : undefined"
     :init-values="diffMode ? (lastValues || {})[name] : model[name]"
@@ -17,9 +18,9 @@
 </template>
 
 <script lang="ts" setup>
-import { computed } from 'vue';
+import { computed, inject } from 'vue';
 
-import type { CodeConfig, FieldProps } from '@tmagic/form';
+import { type CodeConfig, type FieldProps, FORM_SILENT_MODE_KEY } from '@tmagic/form';
 
 import MagicCodeEditor from '@editor/layouts/CodeEditor.vue';
 
@@ -27,6 +28,13 @@ defineOptions({
   name: 'MFieldsVsCode',
 });
 
+/**
+ * 静默模式（submitForm/validateForm 隐藏挂载）下跳过 monaco 渲染：
+ * 校验由 FormItem 针对 model 中的值完成，与编辑器实例无关；本组件挂载无值副作用
+ * （save 仅由用户操作/编辑器内容变更触发），跳过可省去 monaco worker/model 的无谓实例化。
+ */
+const silentMode = inject(FORM_SILENT_MODE_KEY, false);
+
 const emit = defineEmits<{
   change: [value: string | any];
 }>();
diff --git a/packages/editor/tests/unit/fields/Code.spec.ts b/packages/editor/tests/unit/fields/Code.spec.ts
index 2e60f4ae..1619d336 100644
--- a/packages/editor/tests/unit/fields/Code.spec.ts
+++ b/packages/editor/tests/unit/fields/Code.spec.ts
@@ -7,6 +7,8 @@ import { beforeEach, describe, expect, test, vi } from 'vitest';
 import { defineComponent, h } from 'vue';
 import { mount } from '@vue/test-utils';
 
+import { FORM_SILENT_MODE_KEY } from '@tmagic/form';
+
 import Code from '@editor/fields/Code.vue';
 
 // 用一个简单的桩组件代替 MagicCodeEditor，把所有 props 原样渲染到 data-* 属性上，
@@ -45,7 +47,7 @@ vi.mock('@editor/layouts/CodeEditor.vue', () => ({
   }),
 }));
 
-const mountCode = (props: Record<string, any>) =>
+const mountCode = (props: Record<string, any>, global?: Record<string, any>) =>
   mount(Code, {
     props: {
       // FieldProps 必填字段，用 as any 绕过测试中类型严格匹配
@@ -55,6 +57,7 @@ const mountCode = (props: Record<string, any>) =>
       prop: 'codeField',
       ...props,
     } as any,
+    global,
   });
 
 const getEl = (wrapper: ReturnType<typeof mountCode>) => wrapper.find('.fake-code-editor').element as HTMLElement;
@@ -168,6 +171,28 @@ describe('Code', () => {
     });
   });
 
+  describe('静默模式', () => {
+    test('注入 FORM_SILENT_MODE_KEY=true 时不渲染 CodeEditor', () => {
+      const wrapper = mountCode(
+        {},
+        {
+          provide: { [FORM_SILENT_MODE_KEY as symbol]: true },
+        },
+      );
+      expect(wrapper.find('.fake-code-editor').exists()).toBe(false);
+    });
+
+    test('注入 FORM_SILENT_MODE_KEY=false 时正常渲染 CodeEditor', () => {
+      const wrapper = mountCode(
+        {},
+        {
+          provide: { [FORM_SILENT_MODE_KEY as symbol]: false },
+        },
+      );
+      expect(wrapper.find('.fake-code-editor').exists()).toBe(true);
+    });
+  });
+
   describe('diff 模式 (对比)', () => {
     test('isCompare=true 且有 lastValues 时切换为 diff 模式', () => {
       const wrapper = mountCode({
diff --git a/packages/form/src/schema.ts b/packages/form/src/schema.ts
index d656f4eb..1db044a5 100644
--- a/packages/form/src/schema.ts
+++ b/packages/form/src/schema.ts
@@ -29,6 +29,17 @@ export interface FormDiffConfig {
 export const FORM_DIFF_CONFIG_KEY: InjectionKey<FormDiffConfig> = Symbol('mFormDiffConfig');
 export const FORM_TYPE_MATCH_VALID_KEY: InjectionKey<ComputedRef<boolean>> = Symbol('mFormTypeMatchValid');
 
+/**
+ * 静默模式标记，由 `submitForm` / `validateForm` 以隐藏方式挂载临时表单时 provide（debug 弹层模式不提供）。
+ *
+ * 重型字段组件（如 vs-code）可 inject 该标记并跳过自身渲染：字段校验由 FormItem 基于 model 值完成，
+ * 与叶子 UI 组件实例无关，跳过可省去无谓的实例化开销（如 monaco worker / model 的创建）。
+ *
+ * 注意：仅「挂载无值副作用」（不在 onMounted/watch immediate 中 emit change、不依赖 DOM 计算值）的
+ * 字段组件可以安全跳过，接入前需逐一审计。
+ */
+export const FORM_SILENT_MODE_KEY: InjectionKey<boolean> = Symbol('mFormSilentMode');
+
 export interface ValidateError {
   message: string;
   field: string;
diff --git a/packages/form/src/submitForm.ts b/packages/form/src/submitForm.ts
index ae16daf3..37b358bd 100644
--- a/packages/form/src/submitForm.ts
+++ b/packages/form/src/submitForm.ts
@@ -16,11 +16,22 @@
  * limitations under the License.
  */
 
-import { type AppContext, type Component, createApp, defineComponent, h, nextTick, type Ref, ref, watch } from 'vue';
+import {
+  type AppContext,
+  type Component,
+  createApp,
+  defineComponent,
+  h,
+  nextTick,
+  provide,
+  type Ref,
+  ref,
+  watch,
+} from 'vue';
 
 import { applyExtendState } from './utils/form';
 import Form from './Form.vue';
-import type { ChangeRecord, FormConfig, FormState } from './schema';
+import { type ChangeRecord, FORM_SILENT_MODE_KEY, type FormConfig, type FormState } from './schema';
 
 // #region SubmitFormOptions
 /**
@@ -210,7 +221,21 @@ const mountFormInstance = <T>(options: MountFormInstanceOptions<T>): Promise<T>
           })
         : userWrapper;
 
-    const app = createApp(wrapperComponent);
+    // 静默（隐藏挂载）模式下注入静默标记：vs-code 等重型字段组件可据此跳过自身渲染，
+    // 校验/取值依赖 FormItem 与 model 值，与叶子 UI 组件无关（见 FORM_SILENT_MODE_KEY 注释）。
+    // 用组件级 provide 而非 app.provide：appContext 合并后 app._context.provides 与父级应用
+    // 共享引用，app.provide 会把标记泄漏到父级应用。
+    const rootComponent = hidden
+      ? defineComponent({
+          name: 'MFormSilentProvider',
+          setup() {
+            provide(FORM_SILENT_MODE_KEY, true);
+            return () => h(wrapperComponent);
+          },
+        })
+      : wrapperComponent;
+
+    const app = createApp(rootComponent);
     instance.app = app;
 
     // 继承父级应用上下文（components / directives / provides / config 等）
diff --git a/packages/form/tests/unit/submitForm.spec.ts b/packages/form/tests/unit/submitForm.spec.ts
index a62e8158..5f2e7c60 100644
--- a/packages/form/tests/unit/submitForm.spec.ts
+++ b/packages/form/tests/unit/submitForm.spec.ts
@@ -16,18 +16,29 @@
  * limitations under the License.
  */
 import { afterEach, beforeAll, describe, expect, test, vi } from 'vitest';
-import { type AppContext, createApp, defineComponent, h, nextTick } from 'vue';
-import MagicForm, { submitForm } from '@form/index';
+import { type AppContext, createApp, defineComponent, h, inject, nextTick } from 'vue';
+import MagicForm, { FORM_SILENT_MODE_KEY, submitForm, validateForm } from '@form/index';
 import ElementPlus from 'element-plus';
 
 let appContext: AppContext;
 
+// 探针字段：挂载时注入静默标记并记录，用于验证 submitForm/validateForm 的 provide 行为
+const silentProbeValues: (boolean | undefined)[] = [];
+const SilentProbe = defineComponent({
+  name: 'MFieldsSilentProbe',
+  setup() {
+    silentProbeValues.push(inject(FORM_SILENT_MODE_KEY, undefined));
+    return () => h('div');
+  },
+});
+
 beforeAll(() => {
   // 构造一个父级 app，把 element-plus 与 m-form 插件装上，
   // 之后通过 appContext 传给 submitForm 复用全局注册
   const parentApp = createApp(defineComponent({ render: () => h('div') }));
   parentApp.use(ElementPlus);
   parentApp.use(MagicForm);
+  parentApp.component('m-fields-silent-probe', SilentProbe);
   appContext = parentApp._context;
 });
 
@@ -216,6 +227,44 @@ describe('submitForm', () => {
     expect(caught).toBeInstanceOf(Error);
   });
 
+  test('静默（隐藏挂载）模式下向字段 provide FORM_SILENT_MODE_KEY=true', async () => {
+    silentProbeValues.length = 0;
+
+    const values = await submitForm({
+      config: [{ type: 'silent-probe', name: 'text', text: 'text' }],
+      initValues: { text: 'hello' },
+      appContext,
+    });
+
+    expect(values).toEqual({ text: 'hello' });
+    expect(silentProbeValues).toEqual([true]);
+  });
+
+  test('静默标记不会泄漏到父级应用的 provides', async () => {
+    silentProbeValues.length = 0;
+
+    await submitForm({
+      config: [{ type: 'silent-probe', name: 'text', text: 'text' }],
+      initValues: { text: 'hello' },
+      appContext,
+    });
+
+    expect((appContext as any).provides[FORM_SILENT_MODE_KEY as symbol]).toBeUndefined();
+  });
+
+  test('validateForm 静默模式下同样 provide FORM_SILENT_MODE_KEY=true', async () => {
+    silentProbeValues.length = 0;
+
+    const error = await validateForm({
+      config: [{ type: 'silent-probe', name: 'text', text: 'text' }],
+      initValues: { text: 'hello' },
+      appContext,
+    });
+
+    expect(error).toBe('');
+    expect(silentProbeValues).toEqual([true]);
+  });
+
   test('timeout > 0 时会注册定时器，timeout <= 0 时不注册', async () => {
     const setTimeoutSpy = vi.spyOn(globalThis, 'setTimeout');
 
@@ -354,6 +403,24 @@ describe('submitForm —— debug 模式', () => {
     expect(document.body.querySelector('.m-form')).toBeNull();
   });
 
+  test('debug 模式不提供静默标记（表单可见，字段应正常渲染）', async () => {
+    silentProbeValues.length = 0;
+
+    const pending = submitForm({
+      config: [{ type: 'silent-probe', name: 'text', text: 'text' }],
+      initValues: { text: 'hello' },
+      debug: true,
+      appContext,
+    });
+    await nextTick();
+    await nextTick();
+
+    expect(silentProbeValues).toEqual([undefined]);
+
+    findButton('确定').click();
+    await pending;
+  });
+
   test('debug 模式不注册超时定时器（等待人工操作）', async () => {
     const setTimeoutSpy = vi.spyOn(globalThis, 'setTimeout');