diff --git a/HTS_etf.py b/HTS_etf.py
index cb94323..f78ca03 100644
--- a/HTS_etf.py
+++ b/HTS_etf.py
@@ -132,7 +132,7 @@ class HTS_etf (HTS):
 
                     if bs_buy_price > 0:
 
-                        if not self.orderChecker.exist(today, "A" + stock['stock_code'], mins=10):
+                        if not self.orderChecker.exist(today, "A" + stock['stock_code'], mins=30):
 
                             buy_count = int(self.MAX_BUY_PRICE/bs_buy_price)
 
diff --git a/HTS_stocks.py b/HTS_stocks.py
index 1bc0a24..20e12e3 100644
--- a/HTS_stocks.py
+++ b/HTS_stocks.py
@@ -137,14 +137,14 @@ class HTS_Stocks (HTS):
 
                     # 미체결 기록을 가져와서 10분 이상 된 매수 주문을 취소 한다.
                     ORDER_LIST = self.requestOrderList()
-                    orderListToCancel = self.orderChecker.cancel(today, "A" + stock_code, ORDER_LIST, mins=60)
+                    orderListToCancel = self.orderChecker.cancel(today, "A" + stock_code, ORDER_LIST, mins=10)
                     if len(orderListToCancel) > 0:
                         self.cancelOrderList(orderListToCancel)
 
                     # 다음 조건이면 매수한다.
                     if len(data) > 10 and max(bsLine['buy'][len(bsLine['buy']) - 1:]) > 1000:
 
-                        if not self.orderChecker.exist(today, "A" + stock_code, mins=10):
+                        if not self.orderChecker.exist(today, "A" + stock_code, hours=2):
 
                             last_index = len(bsLine['buy'])-1
                             if bsLine['buy'][last_index] > 0:
diff --git a/hts/OrderChecker.py b/hts/OrderChecker.py
index ef6f7e9..500faff 100644
--- a/hts/OrderChecker.py
+++ b/hts/OrderChecker.py
@@ -29,11 +29,14 @@ class OrderChecker:
         order_df['datetime'] = pd.to_datetime(order_df['datetime'])
         return order_df
 
-    def exist(self, ymd, stock_code, mins=30):
+    def exist(self, ymd, stock_code, mins=None, hours=None):
         order_df = self.read(ymd)
         if order_df is not None and len(order_df)>0:
             tmp = order_df.loc[order_df["stock_code"] == stock_code]
-            now = datetime.now() - timedelta(minutes=mins)
+            if mins is not None:
+                now = datetime.now() - timedelta(minutes=mins)
+            else:
+                now = datetime.now() - timedelta(hours=hours)
             tmp = tmp.loc[now < tmp["datetime"]]
             if tmp is not None and len(tmp) > 0:
                 return True