diff --git a/packages/components/Button/Button.test.tsx b/packages/components/Button/Button.test.tsx
index ff6f8e7..647e69c 100644
--- a/packages/components/Button/Button.test.tsx
+++ b/packages/components/Button/Button.test.tsx
@@ -1,6 +1,8 @@
-import { describe, it, expect } from 'vitest'
+import { describe, it, expect, test } from 'vitest'
 import { mount } from '@vue/test-utils'
 import Button from './Button.vue' 
+import Icon from '../Icon/Icon.vue';
+import ButtonGroup from './ButtonGroup.vue';
 import type { ButtonType, ButtonSize } from './types';
 
 describe('Button.vue', ()=> {
@@ -67,4 +69,124 @@ describe('Button.vue', ()=> {
     await wrapper.trigger("click");
     expect(wrapper.emitted().click).toHaveLength(1);
   });
-})
\ No newline at end of file
+
+  // Exception Handling: loading state
+  it("should display loading icon and not emit click event when button is loading", async () => {
+    const wrapper = mount(Button, {
+      props: { loading: true },
+      global: {
+        stubs: ["MyIcon"],
+      }
+    });
+    const iconElement = wrapper.findComponent(Icon);
+
+    expect(wrapper.find('.loading-icon').exists()).toBe(true);
+    expect(iconElement.exists()).toBeTruthy();
+    expect(iconElement.attributes('icon')).toBe('spinner');
+    await wrapper.trigger('click');
+    expect(wrapper.emitted('click')).toBeUndefined();
+  })
+
+  test("loading button", () => {
+    const wrapper = mount(Button, {
+      props: {
+        loading: true,
+      },
+      slots: {
+        default: "loading button",
+      },
+      global: {
+        stubs: ["MyIcon"],
+      },
+    });
+
+    // class
+    expect(wrapper.classes()).toContain("is-loading");
+
+    // attrs
+    expect(wrapper.attributes("disabled")).toBeDefined();
+    expect(wrapper.find("button").element.disabled).toBeTruthy();
+
+    // events
+    wrapper.get("button").trigger("click");
+    expect(wrapper.emitted()).not.toHaveProperty("click");
+
+    // icon
+    const iconElement = wrapper.findComponent(Icon);
+    expect(iconElement.exists()).toBeTruthy();
+    expect(iconElement.attributes("icon")).toBe("spinner");
+  });
+
+  test("icon button", () => {
+    const wrapper = mount(Button, {
+      props: {
+        icon: "arrow-up",
+      },
+      slots: {
+        default: "icon button",
+      },
+      global: {
+        stubs: ["MyIcon"],
+      },
+    });
+
+    const iconElement = wrapper.findComponent(Icon);
+    expect(iconElement.exists()).toBeTruthy();
+    expect(iconElement.attributes("icon")).toBe("arrow-up");
+  });
+})
+
+describe("ButtonGroup.vue", () => {
+  test("basic button group", async () => {
+    const wrapper = mount(() => (
+      <ButtonGroup>
+        <Button>button 1</Button>
+        <Button>button 2</Button>
+      </ButtonGroup>
+    ));
+
+    expect(wrapper.classes()).toContain("my-button-group");
+  });
+
+  test("button group size", () => {
+    const sizes = ["large", "default", "small"];
+    sizes.forEach((size) => {
+      const wrapper = mount(() => (
+        <ButtonGroup size={size as any}>
+          <Button>button 1</Button>
+          <Button>button 2</Button>
+        </ButtonGroup>
+      ));
+
+      const buttonWrapper = wrapper.findComponent(Button);
+      expect(buttonWrapper.classes()).toContain(`my-button--${size}`);
+    });
+  });
+
+  test("button group type", () => {
+    const types = ["primary", "success", "warning", "danger", "info"];
+    types.forEach((type) => {
+      const wrapper = mount(() => (
+        <ButtonGroup type={type as any}>
+          <Button>button 1</Button>
+          <Button>button 2</Button>
+        </ButtonGroup>
+      ));
+
+      const buttonWrapper = wrapper.findComponent(Button);
+      expect(buttonWrapper.classes()).toContain(`my-button--${type}`);
+    });
+  });
+
+  test("button group disabled", () => {
+    const wrapper = mount(() => (
+      <ButtonGroup disabled>
+        <Button>button 1</Button>
+        <Button>button 2</Button>
+      </ButtonGroup>
+    ));
+
+    const buttonWrapper = wrapper.findComponent(Button);
+    expect(buttonWrapper.classes()).toContain(`is-disabled`);
+  });
+});
\ No newline at end of file
diff --git a/packages/components/Button/Button.vue b/packages/components/Button/Button.vue
index 9d60894..5622c43 100644
--- a/packages/components/Button/Button.vue
+++ b/packages/components/Button/Button.vue
@@ -1,8 +1,9 @@
 <script setup lang="ts">
 import type { ButtonProps, ButtonEmits, ButtonInstance } from './types';
-import { ref, type Ref, computed } from 'vue';
+import { ref, type Ref, computed, inject } from 'vue';
 import { throttle } from 'lodash-es'
 import MyIcon from '../Icon/Icon.vue';
+import {BUTTON_GROUP_CTX_KEY} from './contants'
 
 defineOptions({
   name: 'MyButton'
@@ -22,6 +23,11 @@ const slots = defineSlots();
 
 const _ref = ref<HTMLButtonElement>();
 
+const ctx = inject(BUTTON_GROUP_CTX_KEY, void 0) 
+const size = computed(() => ctx?.size ?? props.size ?? 'default')
+const disabled = computed(() => ctx?.disabled || props.disabled || false)
+const type = computed(() => ctx?.type ?? props.type ?? 'primary')
+
 const iconStyle = computed(() => ({
   marginRight: slots.default ? '6px' : '0'
 })) 
diff --git a/packages/components/Button/ButtonGroup.vue b/packages/components/Button/ButtonGroup.vue
new file mode 100644
index 0000000..0583cb7
--- /dev/null
+++ b/packages/components/Button/ButtonGroup.vue
@@ -0,0 +1,24 @@
+<script lang="ts" setup>
+import type { ButtonGroupProps, } from './types';
+import { provide, toRef, reactive } from 'vue';
+import { BUTTON_GROUP_CTX_KEY } from './contants';
+
+defineOptions({
+  name: 'MyButtonGroup',
+})
+const props = defineProps<ButtonGroupProps>()
+
+provide(BUTTON_GROUP_CTX_KEY, reactive({
+  disabled: toRef(props, 'disabled'),
+  size: toRef(props, 'size'),
+  type: toRef(props, 'type'),
+}))
+</script>
+<template>
+  <div class="my-button-group">
+    <slot></slot>
+  </div>
+</template>
+<style scoped>
+@import './style.css';
+</style>
\ No newline at end of file
diff --git a/packages/components/Button/contants.ts b/packages/components/Button/contants.ts
new file mode 100644
index 0000000..3542bd4
--- /dev/null
+++ b/packages/components/Button/contants.ts
@@ -0,0 +1,6 @@
+import type { InjectionKey } from "vue";
+import type { ButtonGroupContext } from "./types";
+
+export const BUTTON_GROUP_CTX_KEY: InjectionKey<ButtonGroupContext> =
+  Symbol("BUTTON_GROUP_CTX_KEY");
+ 
\ No newline at end of file
diff --git a/packages/components/Button/index.ts b/packages/components/Button/index.ts
index ff7b42d..657e5c2 100644
--- a/packages/components/Button/index.ts
+++ b/packages/components/Button/index.ts
@@ -1,6 +1,8 @@
 import Button from './Button.vue'
+import ButtonGroup from './ButtonGroup.vue'
 import { withInstall } from '@moyu-ui/utils'
 
 export const MyButton = withInstall(Button) 
+export const MyButtonGroup = withInstall(ButtonGroup)
 
 export * from './types'
\ No newline at end of file
diff --git a/packages/components/Button/types.ts b/packages/components/Button/types.ts
index 4874e6f..463e3aa 100644
--- a/packages/components/Button/types.ts
+++ b/packages/components/Button/types.ts
@@ -31,4 +31,16 @@ export interface ButtonInstance {
   // disabled: ComputedRef<boolean>;
   // size: ComputedRef<string>;
   // type: ComputedRef<string>;
-} 
\ No newline at end of file
+} 
+
+export interface ButtonGroupProps {
+  size?: string;
+  disabled?: boolean;
+  type?: string;
+}
+
+export interface ButtonGroupContext {
+  size?: string;
+  disabled?: boolean;
+  type? : string;
+}
\ No newline at end of file
diff --git a/packages/core/components.ts b/packages/core/components.ts
index b781427..5c0a3ea 100644
--- a/packages/core/components.ts
+++ b/packages/core/components.ts
@@ -1,4 +1,4 @@
-import { MyButton, MyIcon } from "@moyu-ui/components";
+import { MyButton, MyIcon, MyButtonGroup } from "@moyu-ui/components";
 import type { Plugin } from "vue";
 
-export default [MyButton, MyIcon ] as Plugin[];
\ No newline at end of file
+export default [MyButton, MyIcon, MyButtonGroup ] as Plugin[];
\ No newline at end of file
diff --git a/packages/play/src/stories/Button.stories.ts b/packages/play/src/stories/Button.stories.ts
index 6258bde..9f260c2 100644
--- a/packages/play/src/stories/Button.stories.ts
+++ b/packages/play/src/stories/Button.stories.ts
@@ -1,6 +1,6 @@
 import type { Meta, StoryObj, ArgTypes } from "@storybook/vue3";
 import { fn, within, userEvent, expect } from "@storybook/test";
-import { MyButton  } from "moyu-ui";
+import { MyButton, MyButtonGroup } from "moyu-ui";
 // import "moyu-ui/dist/theme/Button.css";  
 
 type Story = StoryObj<typeof MyButton> & { argTypes?: ArgTypes };
@@ -87,80 +87,80 @@ export const Default: Story & { args: { content: string } } = {
   },
 };
 
-// export const Circle: Story = {
-//   args: {
-//     icon: "search",
-//   },
-//   render: (args) => ({
-//     components: { MyButton },
-//     setup() {
-//       return { args };
-//     },
-//     template: container(`
-//       <er-button circle v-bind="args"/>
-//     `),
-//   }),
-//   play: async ({ canvasElement, args, step }) => {
-//     const canvas = within(canvasElement);
-//     await step("click button", async () => {
-//       await userEvent.click(canvas.getByRole("button"));
-//     });
+export const Circle: Story = {
+  args: {
+    icon: "search",
+  },
+  render: (args) => ({
+    components: { MyButton },
+    setup() {
+      return { args };
+    },
+    template: container(`
+      <my-button circle v-bind="args"/>
+    `),
+  }),
+  play: async ({ canvasElement, args, step }) => {
+    const canvas = within(canvasElement);
+    await step("click button", async () => {
+      await userEvent.click(canvas.getByRole("button"));
+    });
 
-//     expect(args.onClick).toHaveBeenCalled();
-//   },
-// };
+    expect(args.onClick).toHaveBeenCalled();
+  },
+};
 
-// Circle.parameters = {};
+Circle.parameters = {};
 
-// export const Group: Story & { args: { content1: string; content2: string } } = {
-//   argTypes: {
-//     groupType: {
-//       control: { type: "select" },
-//       options: ["primary", "success", "warning", "danger", "info", ""],
-//     },
-//     groupSize: {
-//       control: { type: "select" },
-//       options: ["large", "default", "small", ""],
-//     },
-//     groupDisabled: {
-//       control: "boolean",
-//     },
-//     content1: {
-//       control: { type: "text" },
-//       defaultValue: "Button1",
-//     },
-//     content2: {
-//       control: { type: "text" },
-//       defaultValue: "Button2",
-//     },
-//   },
-//   args: {
-//     round: true,
-//     content1: "Button1",
-//     content2: "Button2",
-//   },
-//   render: (args) => ({
-//     components: { ErButton, ErButtonGroup },
-//     setup() {
-//       return { args };
-//     },
-//     template: container(`
-//        <er-button-group :type="args.groupType" :size="args.groupSize" :disabled="args.groupDisabled">
-//          <er-button v-bind="args">{{args.content1}}</er-button>
-//          <er-button v-bind="args">{{args.content2}}</er-button>
-//        </er-button-group>
-//     `),
-//   }),
-//   play: async ({ canvasElement, args, step }) => {
-//     const canvas = within(canvasElement);
-//     await step("click btn1", async () => {
-//       await userEvent.click(canvas.getByText("Button1"));
-//     });
-//     await step("click btn2", async () => {
-//       await userEvent.click(canvas.getByText("Button2"));
-//     });
-//     expect(args.onClick).toHaveBeenCalled();
-//   },
-// };
+export const Group: Story & { args: { content1: string; content2: string } } = {
+  argTypes: {
+    groupType: {
+      control: { type: "select" },
+      options: ["primary", "success", "warning", "danger", "info", ""],
+    },
+    groupSize: {
+      control: { type: "select" },
+      options: ["large", "default", "small", ""],
+    },
+    groupDisabled: {
+      control: "boolean",
+    },
+    content1: {
+      control: { type: "text" },
+      defaultValue: "Button1",
+    },
+    content2: {
+      control: { type: "text" },
+      defaultValue: "Button2",
+    },
+  },
+  args: {
+    round: true,
+    content1: "Button1",
+    content2: "Button2",
+  },
+  render: (args) => ({
+    components: { MyButton, MyButtonGroup },
+    setup() {
+      return { args };
+    },
+    template: container(`
+       <my-button-group :type="args.groupType" :size="args.groupSize" :disabled="args.groupDisabled">
+         <my-button v-bind="args">{{args.content1}}</my-button>
+         <my-button v-bind="args">{{args.content2}}</my-button>
+       </my-button-group>
+    `),
+  }),
+  play: async ({ canvasElement, args, step }) => {
+    const canvas = within(canvasElement);
+    await step("click btn1", async () => {
+      await userEvent.click(canvas.getByText("Button1"));
+    });
+    await step("click btn2", async () => {
+      await userEvent.click(canvas.getByText("Button2"));
+    });
+    expect(args.onClick).toHaveBeenCalled();
+  },
+};
 
 export default meta;
\ No newline at end of file