diff --git a/packages/uni-cli-shared/lib/platform.js b/packages/uni-cli-shared/lib/platform.js
index 31eee8f737efee4c9c67173dd868cea75be29507..a6dd2c6e651aed5dba7a8ffd4752c4dcf483dcab 100644
--- a/packages/uni-cli-shared/lib/platform.js
+++ b/packages/uni-cli-shared/lib/platform.js
@@ -125,15 +125,14 @@ const PLATFORMS = {
     filterTag: 'wxs',
     subPackages: false,
     cssVars: {
-      '--window-top': '0px',
-      '--window-bottom': '0px'
+      '--window-top': '0px'
     },
     copyWebpackOptions ({
       assetsDir,
       vueOptions
-    }) {
-      if (
-        vueOptions &&
+    }) {
+      if (
+        vueOptions &&
         vueOptions.pluginOptions &&
         vueOptions.pluginOptions['uni-app-plus'] &&
         vueOptions.pluginOptions['uni-app-plus']['view']
@@ -155,9 +154,9 @@ const PLATFORMS = {
           require.resolve('@dcloudio/uni-app-plus/dist/view.css'),
           require.resolve('@dcloudio/uni-app-plus/dist/view.umd.min.js')
         ])
-        template = [
-          ...getCopyOptions([path.resolve(__dirname, '../template/common')]),
-          ...getCopyOptions([path.resolve(__dirname, '../template/v3')])
+        template = [
+          ...getCopyOptions([path.resolve(__dirname, '../template/common')]),
+          ...getCopyOptions([path.resolve(__dirname, '../template/v3')])
         ]
       }
       return [
@@ -558,4 +557,4 @@ module.exports = {
   getPlatformSass () {
     return SASS
   }
-}
+}
diff --git a/src/platforms/app-plus/service/api/device/system.js b/src/platforms/app-plus/service/api/device/system.js
index ec38d1b84df723713a84bf9fcf18ff9ace9f44c3..9b13810bbe130b76bfc9666b89cc77f16231b3ee 100644
--- a/src/platforms/app-plus/service/api/device/system.js
+++ b/src/platforms/app-plus/service/api/device/system.js
@@ -48,8 +48,9 @@ export function getSystemInfo () {
   } else {
     safeAreaInsets = ios ? plus.navigator.getSafeAreaInsets() : getSafeAreaInsets()
   }
+  var windowBottom = isTabBarPage() && tabBar.visible && tabBar.cover ? tabBar.height : 0
   var windowHeight = Math.min(screenHeight - (titleNView ? (statusBarHeight + TITLEBAR_HEIGHT)
-    : 0) - (isTabBarPage() && tabBar.visible ? tabBar.height : 0), screenHeight)
+    : 0) - windowBottom, screenHeight)
   var windowWidth = screenWidth
   var safeArea = {
     left: safeAreaInsets.left,
@@ -77,7 +78,7 @@ export function getSystemInfo () {
     platform,
     SDKVersion: '',
     windowTop: 0,
-    windowBottom: 0,
+    windowBottom,
     safeArea
   }
 }
diff --git a/src/platforms/app-plus/service/framework/plugins/lifecycle.js b/src/platforms/app-plus/service/framework/plugins/lifecycle.js
index 268d5a8b03d1572334d376c8d266baa09b1e632f..bf904cca02f87d1cbed195248362be84b0ed50a0 100644
--- a/src/platforms/app-plus/service/framework/plugins/lifecycle.js
+++ b/src/platforms/app-plus/service/framework/plugins/lifecycle.js
@@ -20,6 +20,8 @@ import {
 }
   from '../../constants'
 
+import tabBar from '../tab-bar'
+
 function parsePageCreateOptions (vm, route) {
   const pagePath = '/' + route
   const routeOptions = __uniRoutes.find(route => route.path === pagePath)
@@ -39,7 +41,7 @@ function parsePageCreateOptions (vm, route) {
     onPageReachBottom,
     onReachBottomDistance,
     windowTop: 0, // TODO
-    windowBottom: 0 // TODO
+    windowBottom: (tabBar.indexOf(route) >= 0 && tabBar.cover) ? tabBar.height : 0
   }
 }
 
@@ -76,4 +78,4 @@ export function initLifecycle (Vue) {
       }
     }
   })
-}
+}
diff --git a/src/platforms/app-plus/service/framework/safe-area.js b/src/platforms/app-plus/service/framework/safe-area-insets.js
similarity index 100%
rename from src/platforms/app-plus/service/framework/safe-area.js
rename to src/platforms/app-plus/service/framework/safe-area-insets.js
diff --git a/src/platforms/app-plus/service/framework/tab-bar.js b/src/platforms/app-plus/service/framework/tab-bar.js
index 098d50c1f234c8d9de8f1bc30f72d587731a7156..6d17ec148bafc843fc7dd73990593ef20ad0acd7 100644
--- a/src/platforms/app-plus/service/framework/tab-bar.js
+++ b/src/platforms/app-plus/service/framework/tab-bar.js
@@ -7,8 +7,10 @@ import {
   requireNativePlugin
 } from '../bridge'
 
-const TABBAR_HEIGHT = 50
+import safeAreaInsets from './safe-area-insets'
 
+const TABBAR_HEIGHT = 50
+const isIOS = plus.os.name === 'iOS'
 let config
 
 /**
@@ -73,7 +75,7 @@ function setTabBarStyle (style) {
 }
 /**
  * 隐藏 tabBar
- * @param {boolean} animation 是否需要动画效果 暂未支持
+ * @param {boolean} animation 是否需要动画效果
  */
 function hideTabBar (animation) {
   visible = false
@@ -83,7 +85,7 @@ function hideTabBar (animation) {
 }
 /**
  * 显示 tabBar
- * @param {boolean} animation 是否需要动画效果 暂未支持
+ * @param {boolean} animation 是否需要动画效果
  */
 function showTabBar (animation) {
   visible = true
@@ -110,7 +112,7 @@ export default {
       publish('onTabBarMidButtonTap', {})
     })
   },
-  switchTab (page) {
+  indexOf (page) {
     const itemLength = config.list.length
     if (itemLength) {
       for (let i = 0; i < itemLength; i++) {
@@ -118,13 +120,20 @@ export default {
           config.list[i].pagePath === page ||
           config.list[i].pagePath === `${page}.html`
         ) {
-          tabBar && tabBar.switchSelect({
-            index: i
-          })
-          return true
+          return i
         }
       }
     }
+    return -1
+  },
+  switchTab (page) {
+    const index = this.indexOf(page)
+    if (index >= 0) {
+      tabBar && tabBar.switchSelect({
+        index
+      })
+      return true
+    }
     return false
   },
   setTabBarBadge,
@@ -148,7 +157,13 @@ export default {
     return visible
   },
   get height () {
-    return config && config.height ? parseFloat(config.height) : TABBAR_HEIGHT
+    return (config && config.height ? parseFloat(config.height) : TABBAR_HEIGHT) + safeAreaInsets.bottom
+  },
+  // tabBar是否遮挡内容区域
+  get cover () {
+    const array = ['extralight', 'light', 'dark']
+    // 设置背景颜色会失效
+    return isIOS && array.indexOf(config.blurEffect) >= 0 && !config.backgroundColor
   },
   setStyle ({ mask }) {
     tabBar.setMask({