diff --git a/appPublic/timecost.py b/appPublic/timecost.py
index 8243718..5d20596 100644
--- a/appPublic/timecost.py
+++ b/appPublic/timecost.py
@@ -26,6 +26,14 @@ class TimeCost:
 			return 0,0,0
 		return len(x), sum(x), sum(x)/len(x)
 	
+	@classmethod
+	def clear_all(self):
+		timerecord = {}
+
+	@classmethod
+	def clear(self, name):
+		timerecord[name] = []
+
 	@classmethod
 	def show(self):
 		print('TimeCost ....')
diff --git a/appPublic/version.py b/appPublic/version.py
index fd3529a..6e42b5c 100644
--- a/appPublic/version.py
+++ b/appPublic/version.py
@@ -1 +1 @@
-__version__ = '5.1.21'
+__version__ = '5.1.22'