diff --git a/stock/analysis/Common.py b/stock/analysis/Common.py
index ea1f487..307410e 100644
--- a/stock/analysis/Common.py
+++ b/stock/analysis/Common.py
@@ -731,22 +731,22 @@ class Common:
         check_buy = False
 
         # 체크 1
-        min_open_close_1 = min(stock_daily['open'].iloc[1], stock_daily['close'].iloc[1])
-        min_open_close = min(stock_daily['open'].iloc[0], stock_daily['close'].iloc[0])
+        min_open_close_1 = min(stock_daily['open'][1], stock_daily['close'][1])
+        min_open_close = min(stock_daily['open'][0], stock_daily['close'][0])
 
-        if (stock_daily['leadingSpan1'].iloc[1] < min_open_close_1 <= stock_daily['leadingSpan2'].iloc[1] and
-                stock_daily['leadingSpan1'].iloc[0] < stock_daily['leadingSpan2'].iloc[0] < min_open_close):
+        if (stock_daily['leadingSpan1'][1] < min_open_close_1 <= stock_daily['leadingSpan2'][1] and
+                stock_daily['leadingSpan1'][0] < stock_daily['leadingSpan2'][0] < min_open_close):
             check_buy = True
 
         # 체크 2
         for c in range(0, 3):
-            min_open_close_1 = stock_daily['close'].iloc[(c+1)]
-            min_open_close = stock_daily['close'].iloc[c]
+            min_open_close_1 = stock_daily['close'][(c+1)]
+            min_open_close = stock_daily['close'][c]
 
             if (
                     # 선행1 (상승) < 종가 혹은 시가 < 선행2 (하락) 였는데, 오늘은 선행1 (상승) < 선행2 (하락) < 종가 혹은 시가
-                    (min_open_close_1 <= max(stock_daily['leadingSpan1'].iloc[(c+1)], stock_daily['leadingSpan2'].iloc[(c+1)])) and
-                    (max(stock_daily['leadingSpan1'].iloc[c], stock_daily['leadingSpan2'].iloc[c]) < min_open_close)
+                    (min_open_close_1 <= max(stock_daily['leadingSpan1'][(c+1)], stock_daily['leadingSpan2'][(c+1)])) and
+                    (max(stock_daily['leadingSpan1'][c], stock_daily['leadingSpan2'][c]) < min_open_close)
             ):
                 check_buy = True
                 break