diff --git a/gamesrv/base/player.go b/gamesrv/base/player.go
index 34a2a30..b34d8bc 100644
--- a/gamesrv/base/player.go
+++ b/gamesrv/base/player.go
@@ -1325,8 +1325,13 @@ func (this *Player) UpdatePigBankCoin(gainTexCoin int64) {
 		}
 		return 0
 	}
-
-	BankCoinMax := fGetPropValue("BankMaxCoin")
+	BankCoinMax := int64(0)
+	for _, data := range srvdata.PBDB_PigBank_DiamondMgr.Datas.GetArr() {
+		if this.WelfData.PigBank.DayBuyTimes+1 >= data.BuyCountMin && this.WelfData.PigBank.DayBuyTimes+1 <= data.BuyCountMax {
+			BankCoinMax = int64(data.MaxGold)
+			break
+		}
+	}
 
 	pack := &player.SCPigBankCoin{}