diff --git a/pkg/apis/compute/dbinstance_const.go b/pkg/apis/compute/dbinstance_const.go
index c62e0b9d49..1c331d2a3f 100644
--- a/pkg/apis/compute/dbinstance_const.go
+++ b/pkg/apis/compute/dbinstance_const.go
@@ -103,6 +103,10 @@ const (
 	HUAWEI_DBINSTANCE_CATEGORY_SINGLE  = "single"  //单机
 	HUAWEI_DBINSTANCE_CATEGORY_REPLICA = "replica" //只读
 
+	//谷歌云实例类型
+	GOOGLE_DBINSTANCE_CATEGORY_REGIONAL = "Regional" // 高可用性（区域级）
+	GOOGLE_DBINSTANCE_CATEGORY_ZONAL    = "Zonal"    // 单个地区
+
 	//阿里云存储类型
 	ALIYUN_DBINSTANCE_STORAGE_TYPE_LOCAL_SSD  = "local_ssd"  //本地盘SSD盘
 	ALIYUN_DBINSTANCE_STORAGE_TYPE_CLOUD_ESSD = "cloud_essd" //ESSD云盘
diff --git a/pkg/multicloud/google/dbinstance.go b/pkg/multicloud/google/dbinstance.go
index fc70945299..d92a6edf59 100644
--- a/pkg/multicloud/google/dbinstance.go
+++ b/pkg/multicloud/google/dbinstance.go
@@ -24,6 +24,7 @@ import (
 	"yunion.io/x/jsonutils"
 	"yunion.io/x/log"
 	"yunion.io/x/pkg/errors"
+	"yunion.io/x/pkg/utils"
 
 	billing_api "yunion.io/x/onecloud/pkg/apis/billing"
 	api "yunion.io/x/onecloud/pkg/apis/compute"
@@ -320,7 +321,12 @@ func (rds *SDBInstance) GetDiskSizeGB() int {
 }
 
 func (rds *SDBInstance) GetCategory() string {
-	return rds.BackendType
+	switch rds.Settings.AvailabilityType {
+	case "REGIONAL":
+		return api.GOOGLE_DBINSTANCE_CATEGORY_REGIONAL
+	default:
+		return api.GOOGLE_DBINSTANCE_CATEGORY_ZONAL
+	}
 }
 
 func (rds *SDBInstance) GetStorageType() string {
@@ -545,6 +551,14 @@ func (region *SRegion) CreateRds(name, databaseVersion, category, instanceType,
 		"dataDiskType":      storageType,
 		"dataDiskSizeGb":    diskSizeGb,
 	}
+	if utils.IsInStringArray(category, []string{api.GOOGLE_DBINSTANCE_CATEGORY_REGIONAL, api.GOOGLE_DBINSTANCE_CATEGORY_ZONAL}) {
+		settings["availabilityType"] = strings.ToUpper(category)
+		settings["backupConfiguration"] = map[string]interface{}{
+			"enabled":          true,
+			"binaryLogEnabled": true,
+			"startTime":        "19:00",
+		}
+	}
 	ipConfiguration := map[string]interface{}{
 		"ipv4Enabled": true,
 	}
@@ -560,10 +574,13 @@ func (region *SRegion) CreateRds(name, databaseVersion, category, instanceType,
 		"name":            name,
 		"region":          region.Name,
 		"settings":        settings,
-		"backendType":     category,
+		"backendType":     "SECOND_GEN",
+		"instanceType":    "CLOUD_SQL_INSTANCE",
 	}
 	if len(zoneId) > 0 {
-		body["gceZone"] = zoneId
+		settings["locationPreference"] = map[string]string{
+			"zone": zoneId,
+		}
 	}
 	if len(password) > 0 {
 		body["rootPassword"] = password