diff --git a/app/src/main/java/io/legado/app/ui/readbook/ReadBookActivity.kt b/app/src/main/java/io/legado/app/ui/readbook/ReadBookActivity.kt
index 86eeefc15..cb6e1b66a 100644
--- a/app/src/main/java/io/legado/app/ui/readbook/ReadBookActivity.kt
+++ b/app/src/main/java/io/legado/app/ui/readbook/ReadBookActivity.kt
@@ -444,6 +444,7 @@ class ReadBookActivity : VMBaseActivity<ReadBookViewModel>(R.layout.activity_rea
             }
             BG_COLOR -> {
                 setBg(0, "#${color.toHexString()}")
+                ReadBookConfig.upBg()
                 postEvent(Bus.UP_CONFIG, false)
             }
         }