diff --git a/Bithumb_minute.py b/Bithumb_minute.py
index 4525959..ef63c05 100644
--- a/Bithumb_minute.py
+++ b/Bithumb_minute.py
@@ -579,6 +579,21 @@ class Bithumb_minute(HTS):
 
         return data
 
+    def getMaxPrice(self, price):
+        price = self.MAX_BUY_PRICE
+        first_digit = int(price / 100)
+        if first_digit < 3:
+            price = 20000
+        elif 3 <= first_digit < 4:
+            price = 15000
+        elif 4 <= first_digit < 5:
+            price = 10000
+        elif 5 <= first_digit < 6:
+            price = 7000
+        elif 6 <= first_digit:
+            price = 5000
+        return price
+
     def buyRealTime(self, ticker, analyzed_day=120, isRealTime=False):
 
         """
@@ -622,6 +637,9 @@ class Bithumb_minute(HTS):
             if isRealTime and not check_buy_history:
                 # 매수 조건
                 if max(bsLine['buy'][len(bsLine['buy']) - 2:]) > 100:
+                    self.MAX_BUY_PRICE = self.getMaxPrice(bsLine['buy'][len(bsLine['buy']) - 1])
+
+
                     tmp = self.bithumb.get_balance(ticker)
                     balance = tmp[2]
                     #count = round((balance * (bsLine['buy_weight'][len(bsLine['buy_weight']) - 1] / 100)) / bsLine['buy'][len(bsLine['buy']) - 1], 2)