diff --git a/model/ProjectModel/ProjectManage.py b/model/ProjectModel/ProjectManage.py
index 8434602..ee5cb64 100644
--- a/model/ProjectModel/ProjectManage.py
+++ b/model/ProjectModel/ProjectManage.py
@@ -122,10 +122,13 @@ class ProjectManage(object):
 		# 切换工程
 		currentDB = Globals.getValue('currentProDB')
 		currentProtocolManage = Globals.getValue('protocolManage')
+		currentHistoryDB = Globals.getValue('historyDBManage')
 		if currentDB:
 			currentDB.close()
-		if Globals.getValue('protocolManage'):
+		if currentProtocolManage:
 			currentProtocolManage.shutdown()
+		if currentHistoryDB:
+			currentHistoryDB.close()
 
 
 		Client.initDB()