diff --git a/pkg/cloudcommon/db/metadata.go b/pkg/cloudcommon/db/metadata.go
index a04305ce80..03fa9ee736 100644
--- a/pkg/cloudcommon/db/metadata.go
+++ b/pkg/cloudcommon/db/metadata.go
@@ -38,8 +38,9 @@ const (
 	CLOUD_TAG_PREFIX    = "ext:"
 	USER_TAG_PREFIX     = "user:"
 
-	TAG_DELETE_RANGE_USER  = "user"
-	TAG_DELETE_RANGE_CLOUD = "cloud"
+	// TAG_DELETE_RANGE_USER  = "user"
+	// TAG_DELETE_RANGE_CLOUD = CLOUD_TAG_PREFIX // "cloud"
+
 	TAG_DELETE_RANGE_ALL   = "all"
 )
 
@@ -332,9 +333,9 @@ func (manager *SMetadataManager) SetAll(ctx context.Context, obj IModel, store m
 	records := []SMetadata{}
 	q := manager.Query().Equals("id", idStr).NotLike("key", `\_\_%`) //避免删除系统内置的metadata, _ 在mysql里面有特殊含义,需要转义
 	switch delRange {
-	case TAG_DELETE_RANGE_USER:
+	case USER_TAG_PREFIX:
 		q = q.Like("key", USER_TAG_PREFIX+"%")
-	case TAG_DELETE_RANGE_CLOUD:
+	case CLOUD_TAG_PREFIX:
 		q = q.Like("key", CLOUD_TAG_PREFIX+"%")
 	}
 	q = q.Filter(sqlchemy.NOT(sqlchemy.In(q.Field("key"), keys)))
diff --git a/pkg/cloudcommon/db/standalone.go b/pkg/cloudcommon/db/standalone.go
index d572c0be4e..45ef9d606f 100644
--- a/pkg/cloudcommon/db/standalone.go
+++ b/pkg/cloudcommon/db/standalone.go
@@ -258,7 +258,11 @@ func (model *SStandaloneResourceBase) SetUserMetadataValues(ctx context.Context,
 }
 
 func (model *SStandaloneResourceBase) SetUserMetadataAll(ctx context.Context, dictstore map[string]interface{}, userCred mcclient.TokenCredential) error {
-	return Metadata.SetAll(ctx, model, dictstore, userCred, "user")
+	return Metadata.SetAll(ctx, model, dictstore, userCred, USER_TAG_PREFIX)
+}
+
+func (model *SStandaloneResourceBase) SetCloudMetadataAll(ctx context.Context, dictstore map[string]interface{}, userCred mcclient.TokenCredential) error {
+	return Metadata.SetAll(ctx, model, dictstore, userCred, CLOUD_TAG_PREFIX)
 }
 
 func (model *SStandaloneResourceBase) RemoveMetadata(ctx context.Context, key string, userCred mcclient.TokenCredential) error {
@@ -343,7 +347,7 @@ func (model *SStandaloneResourceBase) PerformSetUserMetadata(ctx context.Context
 	}
 	dictStore := make(map[string]interface{})
 	for k, v := range dictMap {
-		dictStore["user:"+k], _ = v.GetString()
+		dictStore[USER_TAG_PREFIX+k], _ = v.GetString()
 	}
 	err = model.SetUserMetadataAll(ctx, dictStore, userCred)
 	return nil, err
diff --git a/pkg/compute/models/syncutils.go b/pkg/compute/models/syncutils.go
index c64833fd77..2f69554461 100644
--- a/pkg/compute/models/syncutils.go
+++ b/pkg/compute/models/syncutils.go
@@ -21,11 +21,13 @@ import (
 
 	"yunion.io/x/onecloud/pkg/cloudprovider"
 	"yunion.io/x/onecloud/pkg/mcclient"
+	"yunion.io/x/onecloud/pkg/cloudcommon/db"
 )
 
 type IMetadataSetter interface {
-	SetAllMetadata(ctx context.Context, meta map[string]interface{}, userCred mcclient.TokenCredential) error
-	SetMetadata(ctx context.Context, key string, value interface{}, userCred mcclient.TokenCredential) error
+	// SetAllMetadata(ctx context.Context, meta map[string]interface{}, userCred mcclient.TokenCredential) error
+	// SetMetadata(ctx context.Context, key string, value interface{}, userCred mcclient.TokenCredential) error
+	SetCloudMetadataAll(ctx context.Context, meta map[string]interface{}, userCred mcclient.TokenCredential) error
 }
 
 func syncMetadata(ctx context.Context, userCred mcclient.TokenCredential, model IMetadataSetter, remote cloudprovider.ICloudResource) error {
@@ -37,9 +39,13 @@ func syncMetadata(ctx context.Context, userCred mcclient.TokenCredential, model
 			log.Errorf("Get VM Metadata error: %v", err)
 			return err
 		}
+		store := make(map[string]interface{}, 0)
 		for key, value := range meta {
-			model.SetMetadata(ctx, "ext:"+key, value, userCred)
+			store[db.CLOUD_TAG_PREFIX + key] = value
 		}
+		// model.SetMetadata(ctx, "ext:"+key, value, userCred)
+		// replace all ext keys
+		model.SetCloudMetadataAll(ctx, store, userCred)
 	}
 	return nil
 }