diff --git a/pkg/util/aliyun/instance.go b/pkg/util/aliyun/instance.go
index f564167f00..eec17d7c88 100644
--- a/pkg/util/aliyun/instance.go
+++ b/pkg/util/aliyun/instance.go
@@ -118,8 +118,13 @@ type SInstance struct {
 // {"AutoReleaseTime":"","ClusterId":"","Cpu":1,"CreationTime":"2018-05-23T07:58Z","DedicatedHostAttribute":{"DedicatedHostId":"","DedicatedHostName":""},"Description":"","DeviceAvailable":true,"EipAddress":{"AllocationId":"","InternetChargeType":"","IpAddress":""},"ExpiredTime":"2018-05-30T16:00Z","GPUAmount":0,"GPUSpec":"","HostName":"iZ2ze57isp1ali72tzkjowZ","ImageId":"centos_7_04_64_20G_alibase_201701015.vhd","InnerIpAddress":{"IpAddress":[]},"InstanceChargeType":"PrePaid","InstanceId":"i-2ze57isp1ali72tzkjow","InstanceName":"gaoxianqi-test-7days","InstanceNetworkType":"vpc","InstanceType":"ecs.t5-lc2m1.nano","InstanceTypeFamily":"ecs.t5","InternetChargeType":"PayByBandwidth","InternetMaxBandwidthIn":-1,"InternetMaxBandwidthOut":0,"IoOptimized":true,"Memory":512,"NetworkInterfaces":{"NetworkInterface":[{"MacAddress":"00:16:3e:10:f0:c9","NetworkInterfaceId":"eni-2zecqsagtpztl6x5hu2r","PrimaryIpAddress":"192.168.220.214"}]},"OSName":"CentOS  7.4 64位","OSType":"linux","OperationLocks":{"LockReason":[]},"PublicIpAddress":{"IpAddress":[]},"Recyclable":false,"RegionId":"cn-beijing","ResourceGroupId":"","SaleCycle":"Week","SecurityGroupIds":{"SecurityGroupId":["sg-2zecqsagtpztl6x9zynl"]},"SerialNumber":"df05d9b4-df3d-4400-88d1-5f843f0dd088","SpotPriceLimit":0.000000,"SpotStrategy":"NoSpot","StartTime":"2018-05-23T07:58Z","Status":"Running","StoppedMode":"Not-applicable","VlanId":"","VpcAttributes":{"NatIpAddress":"","PrivateIpAddress":{"IpAddress":["192.168.220.214"]},"VSwitchId":"vsw-2ze9cqwza4upoyujq1thd","VpcId":"vpc-2zer4jy8ix3i8f0coc5uw"},"ZoneId":"cn-beijing-f"}
 
 func (self *SRegion) GetInstances(zoneId string, ids []string, offset int, limit int) ([]SInstance, int, error) {
+	if limit > 50 || limit <= 0 {
+		limit = 50
+	}
 	params := make(map[string]string)
 	params["RegionId"] = self.RegionId
+	params["PageSize"] = fmt.Sprintf("%d", limit)
+	params["PageNumber"] = fmt.Sprintf("%d", (offset/limit)+1)
 
 	if len(zoneId) > 0 {
 		params["ZoneId"] = zoneId