diff --git a/src/loading/README.md b/src/loading/README.md
index 3db231dcf..8cd145934 100644
--- a/src/loading/README.md
+++ b/src/loading/README.md
@@ -5,6 +5,7 @@ spline: message
 isComponent: true
 ---
 
+<span class="coverages-badge" style="margin-right: 10px"><img src="https://img.shields.io/badge/coverages%3A%20lines-95%25-blue" /></span><span class="coverages-badge" style="margin-right: 10px"><img src="https://img.shields.io/badge/coverages%3A%20functions-100%25-blue" /></span><span class="coverages-badge" style="margin-right: 10px"><img src="https://img.shields.io/badge/coverages%3A%20statements-95%25-blue" /></span><span class="coverages-badge" style="margin-right: 10px"><img src="https://img.shields.io/badge/coverages%3A%20branches-83%25-blue" /></span>
 ## 引入
 
 全局引入，在 miniprogram 根目录下的`app.json`中配置，局部引入，在需要引入的页面或组件的`index.json`中配置。
diff --git a/src/loading/__test__/indx.test.js b/src/loading/__test__/indx.test.js
new file mode 100644
index 000000000..3d66e15f5
--- /dev/null
+++ b/src/loading/__test__/indx.test.js
@@ -0,0 +1,134 @@
+import simulate from 'miniprogram-simulate';
+import path from 'path';
+
+describe('loading', () => {
+  const loading = simulate.load(path.resolve(__dirname, `../loading`), {
+    rootPath: path.resolve(__dirname, `../../../src`),
+    less: true,
+  });
+
+  describe('props', () => {
+    it(`: loading`, async () => {
+      const id = simulate.load({
+        template: `<t-loading class="base" loading="{{loading}}" delay="{{delay}}"></t-loading>`,
+        data: {
+          loading: true,
+          delay: 0,
+        },
+        methods: {},
+        usingComponents: {
+          't-loading': loading,
+        },
+      });
+
+      const comp = simulate.render(id);
+      comp.attach(document.createElement('parent-wrapper'));
+
+      await simulate.sleep(10);
+      comp.setData({ loading: true, delay: 0 });
+
+      await simulate.sleep(10);
+      comp.setData({ loading: true, delay: 1 });
+
+      // loading = `false`, 判断 show = false
+      await simulate.sleep(10);
+      comp.setData({ loading: false });
+      expect(comp.data.show).not.toBeTruthy();
+
+      const $loading = comp.querySelector('.base >>> .t-loading');
+      expect($loading.dom.getAttribute('style').includes('display:none')).toBeTruthy();
+    });
+
+    it(`: theme`, () => {
+      const id = simulate.load({
+        template: `
+        <t-loading class="base" theme="{{theme}}" loading="{{loading}}"></t-loading>
+        `,
+        data: {
+          theme: 'circular',
+          loading: true,
+        },
+        methods: {},
+        usingComponents: {
+          't-loading': loading,
+        },
+      });
+
+      const comp = simulate.render(id);
+      comp.attach(document.createElement('parent-wrapper'));
+
+      // 结构检测断言
+      // theme = `circular`
+      const indicator = comp.querySelector('.base >>> .t-class-indicator ');
+      expect(indicator.dom.getAttribute('class').includes('t-loading__spinner--circular')).toBeTruthy();
+
+      // theme = `error`, 判断 t-loading__bar 模块是否按预期不存在
+      comp.setData({ theme: 'error' });
+      const loadingBar = comp.querySelector('.base >>> .t-loading__bar');
+      expect(loadingBar).toBeUndefined();
+    });
+
+    it(`: size`, () => {
+      const id = simulate.load({
+        template: `
+        <t-loading class="base" size="{{size}}" loading="{{loading}}"></t-loading>
+        `,
+        data: {
+          size: '44rpx',
+          loading: true,
+        },
+        methods: {},
+        usingComponents: {
+          't-loading': loading,
+        },
+      });
+
+      const comp = simulate.render(id);
+      comp.attach(document.createElement('parent-wrapper'));
+
+      // 样式检测断言
+      // 判断 indicator size是否按预期为20px
+      comp.setData({ size: '20px' });
+      const indicator = comp.querySelector('.base >>> .t-class-indicator ');
+      expect(window.getComputedStyle(indicator.dom).width).toBe('20px');
+    });
+  });
+
+  describe('event', () => {
+    it(`loading :`, async () => {
+      const handleReload = jest.fn();
+      const id = simulate.load({
+        template: `
+        <t-loading
+          class="base"
+          theme="{{theme}}"
+          loading="{{loading}}"
+          bind:reload="handleReload"
+        ></t-loading>
+        `,
+        data: {
+          theme: 'circular',
+          loading: false,
+        },
+        methods: {
+          handleReload,
+        },
+        usingComponents: {
+          't-loading': loading,
+        },
+      });
+
+      const comp = simulate.render(id);
+      comp.attach(document.createElement('parent-wrapper'));
+
+      // theme = 'error', 存在 reload 事件
+      comp.setData({ theme: 'error' });
+      const $refresh = comp.querySelector('.base >>> .t-loading__refresh-btn');
+      $refresh.dispatchEvent('tap');
+      await simulate.sleep(10);
+      expect(handleReload).toHaveBeenCalledTimes(1);
+
+      comp.detach();
+    });
+  });
+});