diff --git a/app/src/main/java/com/yinuo/safetywatcher/watcher/ui/LightSettingActivity.kt b/app/src/main/java/com/yinuo/safetywatcher/watcher/ui/LightSettingActivity.kt
index 508552d..5a3533b 100644
--- a/app/src/main/java/com/yinuo/safetywatcher/watcher/ui/LightSettingActivity.kt
+++ b/app/src/main/java/com/yinuo/safetywatcher/watcher/ui/LightSettingActivity.kt
@@ -41,9 +41,11 @@ class LightSettingActivity : NoOptionsActivity() {
 
         mBinding.tvCancel.setOnClickListener {
             setWindowBrightness(initLight)
+            onBackPressed()
         }
         mBinding.tvConfirm.setOnClickListener {
             setScreenBrightness(mBinding.sbLight.progress)
+            onBackPressed()
         }
     }