diff --git a/app/src/main/assets/updateLog.md b/app/src/main/assets/updateLog.md
index a1c90d61a..d34935f44 100644
--- a/app/src/main/assets/updateLog.md
+++ b/app/src/main/assets/updateLog.md
@@ -7,6 +7,7 @@
 * 增加了Content Provider 接口支持 by [w568w](https://github.com/w568w)
 * 修复阅读界面加入书架后,书籍详情页还是显示加入书架按钮的bug
 * 修复低版本手机自动阅读速度拉动最左边崩溃的bug
+* 给亮度调节加个背景,很多人找不到
 * 修复替换分组选择无效的bug
 * 备份添加书签
 * 修复web端进度更新后手机端进入阅读界面进度不变的bug
diff --git a/app/src/main/java/io/legado/app/ui/book/read/ReadMenu.kt b/app/src/main/java/io/legado/app/ui/book/read/ReadMenu.kt
index 178d2cbac..89a30b8d1 100644
--- a/app/src/main/java/io/legado/app/ui/book/read/ReadMenu.kt
+++ b/app/src/main/java/io/legado/app/ui/book/read/ReadMenu.kt
@@ -2,6 +2,7 @@ package io.legado.app.ui.book.read
 
 import android.content.Context
 import android.content.res.ColorStateList
+import android.graphics.drawable.GradientDrawable
 import android.util.AttributeSet
 import android.view.WindowManager
 import android.view.animation.Animation
@@ -56,6 +57,10 @@ class ReadMenu : FrameLayout {
             fabNightTheme.setImageResource(R.drawable.ic_brightness)
         }
         initAnimation()
+        val brightnessBackground = GradientDrawable()
+        brightnessBackground.cornerRadius = 5F.dp
+        brightnessBackground.setColor(ColorUtils.adjustAlpha(App.INSTANCE.bottomBackground, 0.5f))
+        ll_brightness.background = brightnessBackground
         ll_bottom_bg.setBackgroundColor(context.bottomBackground)
         vw_bg.onClick { }
         vwNavigationBar.onClick { }