diff --git a/aliyun-python-sdk-ess/ChangeLog.txt b/aliyun-python-sdk-ess/ChangeLog.txt
index 6013f22c8..25cc796bc 100644
--- a/aliyun-python-sdk-ess/ChangeLog.txt
+++ b/aliyun-python-sdk-ess/ChangeLog.txt
@@ -1,3 +1,6 @@
+2024-12-02 Version: 2.3.27
+- ScalingGroup support spot replace on demand instance.
+
 2024-11-12 Version: 2.3.26
 - ScalingConfiguration supoort ConfidentialComputingMode.
 
diff --git a/aliyun-python-sdk-ess/aliyunsdkess/__init__.py b/aliyun-python-sdk-ess/aliyunsdkess/__init__.py
index aea4e96be..8e78e67c6 100644
--- a/aliyun-python-sdk-ess/aliyunsdkess/__init__.py
+++ b/aliyun-python-sdk-ess/aliyunsdkess/__init__.py
@@ -1 +1 @@
-__version__ = '2.3.26'
\ No newline at end of file
+__version__ = '2.3.27'
\ No newline at end of file
diff --git a/aliyun-python-sdk-ess/aliyunsdkess/request/v20140828/DescribeElasticStrengthRequest.py b/aliyun-python-sdk-ess/aliyunsdkess/request/v20140828/DescribeElasticStrengthRequest.py
index c1fa9703a..a5e43c57a 100644
--- a/aliyun-python-sdk-ess/aliyunsdkess/request/v20140828/DescribeElasticStrengthRequest.py
+++ b/aliyun-python-sdk-ess/aliyunsdkess/request/v20140828/DescribeElasticStrengthRequest.py
@@ -31,31 +31,68 @@ def __init__(self):
 		if hasattr(self, "endpoint_regional"):
 			setattr(self, "endpoint_regional", endpoint_data.getEndpointRegional())
 
+	def get_ImageId(self): # String
+		return self.get_query_params().get('ImageId')
+
+	def set_ImageId(self, ImageId):  # String
+		self.add_query_param('ImageId', ImageId)
+	def get_DataDiskCategoriess(self): # RepeatList
+		return self.get_query_params().get('DataDiskCategories')
+
+	def set_DataDiskCategoriess(self, DataDiskCategories):  # RepeatList
+		for depth1 in range(len(DataDiskCategories)):
+			self.add_query_param('DataDiskCategories.' + str(depth1 + 1), DataDiskCategories[depth1])
 	def get_ScalingGroupId(self): # String
 		return self.get_query_params().get('ScalingGroupId')
 
 	def set_ScalingGroupId(self, ScalingGroupId):  # String
 		self.add_query_param('ScalingGroupId', ScalingGroupId)
+	def get_VSwitchIdss(self): # RepeatList
+		return self.get_query_params().get('VSwitchIds')
+
+	def set_VSwitchIdss(self, VSwitchIds):  # RepeatList
+		for depth1 in range(len(VSwitchIds)):
+			self.add_query_param('VSwitchIds.' + str(depth1 + 1), VSwitchIds[depth1])
 	def get_InstanceTypess(self): # RepeatList
 		return self.get_query_params().get('InstanceTypes')
 
 	def set_InstanceTypess(self, InstanceTypes):  # RepeatList
 		for depth1 in range(len(InstanceTypes)):
 			self.add_query_param('InstanceTypes.' + str(depth1 + 1), InstanceTypes[depth1])
+	def get_ImageName(self): # String
+		return self.get_query_params().get('ImageName')
+
+	def set_ImageName(self, ImageName):  # String
+		self.add_query_param('ImageName', ImageName)
 	def get_ScalingGroupIdss(self): # RepeatList
 		return self.get_query_params().get('ScalingGroupIds')
 
 	def set_ScalingGroupIdss(self, ScalingGroupIds):  # RepeatList
 		for depth1 in range(len(ScalingGroupIds)):
 			self.add_query_param('ScalingGroupIds.' + str(depth1 + 1), ScalingGroupIds[depth1])
+	def get_Ipv6AddressCount(self): # Integer
+		return self.get_query_params().get('Ipv6AddressCount')
+
+	def set_Ipv6AddressCount(self, Ipv6AddressCount):  # Integer
+		self.add_query_param('Ipv6AddressCount', Ipv6AddressCount)
 	def get_SystemDiskCategoriess(self): # RepeatList
 		return self.get_query_params().get('SystemDiskCategories')
 
 	def set_SystemDiskCategoriess(self, SystemDiskCategories):  # RepeatList
 		for depth1 in range(len(SystemDiskCategories)):
 			self.add_query_param('SystemDiskCategories.' + str(depth1 + 1), SystemDiskCategories[depth1])
+	def get_SpotStrategy(self): # String
+		return self.get_query_params().get('SpotStrategy')
+
+	def set_SpotStrategy(self, SpotStrategy):  # String
+		self.add_query_param('SpotStrategy', SpotStrategy)
 	def get_PriorityStrategy(self): # String
 		return self.get_query_params().get('PriorityStrategy')
 
 	def set_PriorityStrategy(self, PriorityStrategy):  # String
 		self.add_query_param('PriorityStrategy', PriorityStrategy)
+	def get_ImageFamily(self): # String
+		return self.get_query_params().get('ImageFamily')
+
+	def set_ImageFamily(self, ImageFamily):  # String
+		self.add_query_param('ImageFamily', ImageFamily)