diff --git a/src/core/service/api/ui/tab-bar.js b/src/core/service/api/ui/tab-bar.js
new file mode 100644
index 0000000000000000000000000000000000000000..b7728006fbffb4c23be33172acfe8774e518a089
--- /dev/null
+++ b/src/core/service/api/ui/tab-bar.js
@@ -0,0 +1,23 @@
+import {
+  invokeMethod
+} from '../../platform'
+
+export function removeTabBarBadge ({
+  index
+}) {
+  return invokeMethod('setTabBarBadge', {
+    index,
+    type: 'none'
+  })
+}
+
+export function showTabBarRedDot ({
+  index
+}) {
+  return invokeMethod('setTabBarBadge', {
+    index,
+    type: 'redDot'
+  })
+}
+
+export const hideTabBarRedDot = removeTabBarBadge
diff --git a/src/platforms/app-plus/service/api/ui/tab-bar.js b/src/platforms/app-plus/service/api/ui/tab-bar.js
index 0628507c685f7d7c502223e83ab5bee2ee078cf1..764036239288a919ed73a86ebc0921a6f50a1d3d 100644
--- a/src/platforms/app-plus/service/api/ui/tab-bar.js
+++ b/src/platforms/app-plus/service/api/ui/tab-bar.js
@@ -7,7 +7,7 @@ import tabBar from '../../framework/tab-bar'
 export function setTabBarBadge ({
   index,
   text,
-  type
+  type = 'text'
 }) {
   tabBar.setTabBarBadge(type, index, text)
   return {