update：更新菜单样式

src/components/app-menu-item/app-menu-item.scss

+.app-menu-item {
+
+    .app-menu-circle {
+        display: inline-block;
+        border-radius: 50%;
+        width: 20px;
+        height: 20px;
+        line-height: 36px;
+        vertical-align: middle;
+        border: 1px solid #fff;
+        text-align: center;
+        font: 12px Arial, sans-serif;
+        position: relative;
+        left: -5px;
+    }
+}
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src/components/app-menu-item/app-menu-item.vue

@@ -141,3 +141,6 @@ export default class AppMenuItem extends Vue {
 
 }
 </script>
+<style lang='scss'>
+@import './app-menu-item.scss';
+</style>
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src/styles/element/menu.scss

@@ -63,6 +63,8 @@
 
         .el-menu-item,
         .el-submenu__title {
+            height: 40px;
+            line-height: 40px;
             color: var(--app-color-white) !important;
 
             .fa,
@@ -84,4 +86,42 @@
             }
         }
     }
+
+    &.el-menu--collapse {
+        .el-menu--vertical {
+            .el-submenu__title {
+                .el-submenu__icon-arrow {
+                    display: none;
+                }
+            }
+        }
+    }
+}
+
+.el-menu--vertical.app-popper-menu {
+
+    .el-menu-item,
+    .el-submenu__title {
+        height: 40px;
+        line-height: 40px;
+        color: var(--app-color-white) !important;
+
+        .fa,
+        .el-submenu__icon-arrow {
+            color: var(--app-color-white) !important;
+        }
+
+        &:hover,
+        &.is-active {
+            background-color: var(--app-color-blue);
+        }
+    }
+
+    .el-submenu {
+        &.is-active {
+            >.el-submenu__title {
+                background-color: var(--app-color-blue);
+            }
+        }
+    }
 }
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