diff --git a/pkg/cloudprovider/instance.go b/pkg/cloudprovider/instance.go
index 7f24c7136f..22cd39a6c7 100644
--- a/pkg/cloudprovider/instance.go
+++ b/pkg/cloudprovider/instance.go
@@ -15,6 +15,8 @@
 package cloudprovider
 
 import (
+	"strings"
+
 	"yunion.io/x/jsonutils"
 	"yunion.io/x/pkg/util/osprofile"
 
@@ -85,7 +87,7 @@ func (vmConfig *SManagedVMCreateConfig) GetConfig(config *jsonutils.JSONDict) er
 		vmConfig.PublicKey = publicKey
 	}
 	//目前所写的userData格式仅支持Linux
-	if vmConfig.OsType == osprofile.OS_TYPE_LINUX {
+	if strings.ToLower(vmConfig.OsType) == strings.ToLower(osprofile.OS_TYPE_LINUX) {
 		adminPublicKey, _ := config.GetString("admin_public_key")
 		projectPublicKey, _ := config.GetString("project_public_key")
 		oUserData, _ := config.GetString("user_data")