diff --git a/e2e/cases/plugin-react/split-chunk/index.test.ts b/e2e/cases/plugin-react/split-chunk/index.test.ts
index e4e232d2a5..157856d2a4 100644
--- a/e2e/cases/plugin-react/split-chunk/index.test.ts
+++ b/e2e/cases/plugin-react/split-chunk/index.test.ts
@@ -34,6 +34,25 @@ test('should not split react chunks when strategy is `all-in-one`', async ({
   expect(filesNames.find((file) => file.includes('lib-router'))).toBeFalsy();
 });
 
+test('should not split react chunks when splitChunks is disabled', async ({
+  build,
+}) => {
+  const rsbuild = await build({
+    config: {
+      plugins: [
+        pluginReact({
+          splitChunks: false,
+        }),
+      ],
+    },
+  });
+
+  const files = rsbuild.getDistFiles();
+  const filesNames = Object.keys(files);
+  expect(filesNames.find((file) => file.includes('lib-react'))).toBeFalsy();
+  expect(filesNames.find((file) => file.includes('lib-router'))).toBeFalsy();
+});
+
 test('should not override user defined cache groups', async ({ build }) => {
   const rsbuild = await build({
     config: {
diff --git a/packages/plugin-react/src/index.ts b/packages/plugin-react/src/index.ts
index 3501b28078..64839c3e00 100644
--- a/packages/plugin-react/src/index.ts
+++ b/packages/plugin-react/src/index.ts
@@ -25,9 +25,11 @@ export type PluginReactOptions = {
    */
   swcReactOptions?: Rspack.SwcLoaderTransformConfig['react'];
   /**
-   * Configuration for chunk splitting of React-related dependencies.
+   * Configuration for chunk splitting of React-related dependencies when `chunkSplit.strategy`
+   * is set to `split-by-experience`.
+   * @default true
    */
-  splitChunks?: SplitReactChunkOptions;
+  splitChunks?: boolean | SplitReactChunkOptions;
   /**
    * When set to `true`, enables the React Profiler for performance analysis in production builds.
    * @default false
@@ -59,10 +61,11 @@ export const pluginReact = (
   name: PLUGIN_REACT_NAME,
 
   setup(api) {
-    const defaultOptions: PluginReactOptions = {
+    const defaultOptions = {
       fastRefresh: true,
+      splitChunks: true,
       enableProfiler: false,
-    };
+    } satisfies PluginReactOptions;
     const finalOptions = {
       ...defaultOptions,
       ...options,
@@ -76,6 +79,6 @@ export const pluginReact = (
       }
     }
 
-    applySplitChunksRule(api, finalOptions?.splitChunks);
+    applySplitChunksRule(api, finalOptions.splitChunks);
   },
 });
diff --git a/packages/plugin-react/src/splitChunks.ts b/packages/plugin-react/src/splitChunks.ts
index dcc68ba660..5fbb5796b8 100644
--- a/packages/plugin-react/src/splitChunks.ts
+++ b/packages/plugin-react/src/splitChunks.ts
@@ -1,27 +1,25 @@
 import type { RsbuildPluginAPI, Rspack } from '@rsbuild/core';
 import type { SplitReactChunkOptions } from './index.js';
 
-const isPlainObject = (obj: unknown): obj is Record<string, unknown> =>
-  obj !== null &&
-  typeof obj === 'object' &&
-  Object.prototype.toString.call(obj) === '[object Object]';
-
 export const applySplitChunksRule = (
   api: RsbuildPluginAPI,
-  options: SplitReactChunkOptions = {
-    react: true,
-    router: true,
-  },
+  options: SplitReactChunkOptions | boolean,
 ): void => {
   api.modifyBundlerChain((chain, { environment, isProd }) => {
     const { config } = environment;
-    if (config.performance.chunkSplit.strategy !== 'split-by-experience') {
+    if (
+      config.performance.chunkSplit.strategy !== 'split-by-experience' ||
+      options === false
+    ) {
       return;
     }
 
+    const normalizedOptions =
+      options === true ? { react: true, router: true } : options;
+
     const currentConfig =
       chain.optimization.splitChunks.values() as Rspack.Optimization['splitChunks'];
-    if (!isPlainObject(currentConfig)) {
+    if (typeof currentConfig !== 'object') {
       return;
     }
 
@@ -30,7 +28,7 @@ export const applySplitChunksRule = (
       Rspack.OptimizationSplitChunksCacheGroup
     > = {};
 
-    if (options.react) {
+    if (normalizedOptions.react) {
       extraGroups.react = {
         name: 'lib-react',
         test: isProd
@@ -40,7 +38,7 @@ export const applySplitChunksRule = (
       };
     }
 
-    if (options.router) {
+    if (normalizedOptions.router) {
       extraGroups.router = {
         name: 'lib-router',
         test: /node_modules[\\/](?:react-router|react-router-dom|history|@remix-run[\\/]router)[\\/]/,
diff --git a/website/docs/en/plugins/list/plugin-react.mdx b/website/docs/en/plugins/list/plugin-react.mdx
index a9c16dc145..da423fceac 100644
--- a/website/docs/en/plugins/list/plugin-react.mdx
+++ b/website/docs/en/plugins/list/plugin-react.mdx
@@ -158,27 +158,28 @@ This option is used to control this behavior and determine whether the `react` a
 - **Type:**
 
 ```ts
-type SplitReactChunkOptions = {
-  react?: boolean;
-  router?: boolean;
-};
+type SplitChunks =
+  | boolean
+  | {
+      react?: boolean;
+      router?: boolean;
+    };
 ```
 
-- **Default:**
+- **Default:** `true` (equivalent to `{ react: true, router: true }`)
+
+For example, to disable all chunk splitting:
 
 ```ts
-const defaultOptions = {
-  react: true,
-  router: true,
-};
+pluginReact({ splitChunks: false });
 ```
 
-- **Example:**
+Or to disable only the `router` chunk splitting:
 
 ```ts
 pluginReact({
   splitChunks: {
-    react: false,
+    react: true,
     router: false,
   },
 });
diff --git a/website/docs/zh/plugins/list/plugin-react.mdx b/website/docs/zh/plugins/list/plugin-react.mdx
index 6a0889611f..59b772217a 100644
--- a/website/docs/zh/plugins/list/plugin-react.mdx
+++ b/website/docs/zh/plugins/list/plugin-react.mdx
@@ -158,27 +158,28 @@ pluginReact({
 - **类型：**
 
 ```ts
-type SplitReactChunkOptions = {
-  react?: boolean;
-  router?: boolean;
-};
+type SplitChunks =
+  | boolean
+  | {
+      react?: boolean;
+      router?: boolean;
+    };
 ```
 
-- **默认值：**
+- **默认值：** `true`（等价于 `{ react: true, router: true }`）
+
+例如，禁用所有 chunks 拆分：
 
 ```ts
-const defaultOptions = {
-  react: true,
-  router: true,
-};
+pluginReact({ splitChunks: false });
 ```
 
-- **示例：**
+或是仅禁用 `router` chunk 拆分：
 
 ```ts
 pluginReact({
   splitChunks: {
-    react: false,
+    react: true,
     router: false,
   },
 });