diff --git a/transferIndustrySatistics_python.py b/transferIndustrySatistics_python.py
index 2479d52..7b26175 100644
--- a/transferIndustrySatistics_python.py
+++ b/transferIndustrySatistics_python.py
@@ -129,6 +129,11 @@ def getPeriodDiff(dbconfig,dbcursor,startDate,endDate):
                 periodDiffMap[industryMap[blemind2]] = {'rise':0,'flat':0,'fall':1}
     return periodDiffMap
 
+def getPreData(dbconfig,dbcursor,date):
+    preDataMap = {}
+
+    return preDataMap
+
 def main():
     # #数据库A的连接信息；NAS数据库
     # db_a_config = {
@@ -228,6 +233,9 @@ def main():
                 periodIndex += 1
 
             print('start transfer statistics ',trading_date , ' data.')
+            # 获取前一日数据
+            preIndustryDataMap = getPreData(db_a_conn,db_a_cursor,period_trading_dateMap['1'])
+            
             # 获取多日成交额汇总数据
             turnOver5 = getPeriodTurnOver(db_a_conn,db_a_cursor,period_trading_dateMap['5'],trading_date) 
             for data in turnOver5: