diff --git a/app/src/main/kotlin/jackall/moncalc/activity/MainActivity.kt b/app/src/main/kotlin/jackall/moncalc/activity/MainActivity.kt
index b29cd72..352b493 100644
--- a/app/src/main/kotlin/jackall/moncalc/activity/MainActivity.kt
+++ b/app/src/main/kotlin/jackall/moncalc/activity/MainActivity.kt
@@ -15,6 +15,7 @@
 import jackall.moncalc.databinding.ActivityMainBinding
 import jackall.moncalc.db.MonstDataRealmHelper
 import jackall.moncalc.db.QuestRecordRealmHelper
+import jackall.moncalc.utils.AdUtil
 import jackall.moncalc.utils.MySharedPref
 import jackall.moncalc.viewmodel.MainViewModel
 import jackall.moncalc.vo.Drop
@@ -103,4 +104,9 @@
         mainBinding.root.main_view_pager.adapter = MainFragmentPagerAdapter(supportFragmentManager, this)
         mainBinding.root.main_tab_layout.setupWithViewPager(mainBinding.root.main_view_pager)
     }
+
+    override fun onStart() {
+        super.onStart()
+        AdUtil.startBannerAd(this, mainBinding.root.main_banner_layout, Const.BannerUnitId)
+    }
 }
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