diff --git a/src/components/ECharts/index.vue b/src/components/ECharts/index.vue
index f4afa719..03b8b983 100644
--- a/src/components/ECharts/index.vue
+++ b/src/components/ECharts/index.vue
@@ -4,6 +4,7 @@
  *
  * 开源协议：https://opensource.org/licenses/MIT
  * 项目地址：https://gitee.com/youlaiorg/vue3-element-admin
+ * 参考：https://echarts.apache.org/handbook/zh/basics/import/#%E6%8C%89%E9%9C%80%E5%BC%95%E5%85%A5-echarts-%E5%9B%BE%E8%A1%A8%E5%92%8C%E7%BB%84%E4%BB%B6
  *
  * 在使用时，请保留此注释，感谢您对开源的支持！
  -->
@@ -13,10 +14,14 @@
 </template>
 
 <script setup lang="ts">
+// 引入 echarts 核心模块，核心模块提供了 echarts 使用必须要的接口。
 import * as echarts from "echarts/core";
-import { CanvasRenderer } from "echarts/renderers";
+// 引入柱状、折线和饼图常用图表
 import { BarChart, LineChart, PieChart } from "echarts/charts";
+// 引入标题，提示框，直角坐标系，数据集，内置数据转换器组件，
 import { GridComponent, TooltipComponent, LegendComponent } from "echarts/components";
+// 引入 Canvas 渲染器，注意引入 CanvasRenderer 或者 SVGRenderer 是必须的一步
+import { CanvasRenderer } from "echarts/renderers";
 
 import { useResizeObserver } from "@vueuse/core";
 
diff --git a/src/components/LangSelect/index.vue b/src/components/LangSelect/index.vue
index 2dbf7381..ef7f0cb5 100644
--- a/src/components/LangSelect/index.vue
+++ b/src/components/LangSelect/index.vue
@@ -1,8 +1,6 @@
 <template>
   <el-dropdown trigger="click" @command="handleLanguageChange">
-    <div>
-      <div class="i-svg:language" />
-    </div>
+    <div class="i-svg:language" />
     <template #dropdown>
       <el-dropdown-menu>
         <el-dropdown-item
@@ -19,7 +17,6 @@
 </template>
 
 <script setup lang="ts">
-import { useI18n } from "vue-i18n";
 import { useAppStore } from "@/store/modules/app";
 import { LanguageEnum } from "@/enums/LanguageEnum";
 
@@ -38,6 +35,11 @@ const langOptions = [
 const appStore = useAppStore();
 const { locale, t } = useI18n();
 
+/**
+ * 处理语言切换
+ *
+ * @param lang  语言（zh-cn、en）
+ */
 function handleLanguageChange(lang: string) {
   locale.value = lang;
   appStore.changeLanguage(lang);
diff --git a/src/layout/components/Sidebar/components/SidebarMenuItemTitle.vue b/src/layout/components/Sidebar/components/SidebarMenuItemTitle.vue
index aa7cbcc9..67bf325c 100644
--- a/src/layout/components/Sidebar/components/SidebarMenuItemTitle.vue
+++ b/src/layout/components/Sidebar/components/SidebarMenuItemTitle.vue
@@ -1,4 +1,5 @@
 <template>
+  <!-- 菜单图标 -->
   <template v-if="icon">
     <el-icon v-if="isElIcon" class="el-icon">
       <component :is="iconComponent" />