diff --git a/hts/BuySellChecker.py b/hts/BuySellChecker.py
index 4e61f30..012db8d 100644
--- a/hts/BuySellChecker.py
+++ b/hts/BuySellChecker.py
@@ -228,12 +228,13 @@ class BuySellChecker:
         ###################
         ### RSI buy 분석 ###
         ###################
-        if data["rsi"][i - 1] < data["rsis"][i - 1] and data["rsis"][i] < data["rsi"][i]:
-            if data["Close"][i] < data["avg5"][i]:
-                buy = data["Close"][i]
-            else:
-                buy = data["Low"][i]
-            weight = 2
+        if data["rsi"][i] < 20:
+            if data["rsi"][i - 1] < data["rsis"][i - 1] and data["rsis"][i] < data["rsi"][i]:
+                if data["Close"][i] < data["avg5"][i]:
+                    buy = data["Close"][i]
+                else:
+                    buy = data["Low"][i]
+                weight = 1
 
 
         return buy, weight, sell
diff --git a/hts/Simulation.py b/hts/Simulation.py
index c0ee678..8269abd 100644
--- a/hts/Simulation.py
+++ b/hts/Simulation.py
@@ -166,7 +166,7 @@ if __name__ == "__main__":
     stock_codes = ["252670", "122630"]
     given_days = ['20210901','20210902','20210903','20210906','20210907','20210908','20210909','20210910','20210913',
                   '20210914','20210915','20210916','20210917','20210923','20210924','20210927','20210928','20210929',
-                  '20210930','20211001', '20211005','20211006', '20211007','20211008', '20211012','20211013', '20211014']
+                  '20210930','20211001', '20211005','20211006', '20211007','20211008', '20211012','20211013', '20211014', '20211018']
     simulation = Simulation()
 
     given_days = sorted(given_days, reverse=True)