diff --git a/pkg/compute/models/purge.go b/pkg/compute/models/purge.go
index 04520639aa..9559e89e56 100644
--- a/pkg/compute/models/purge.go
+++ b/pkg/compute/models/purge.go
@@ -630,9 +630,9 @@ func (snapshot *SSnapshot) purge(ctx context.Context, userCred mcclient.TokenCre
 	lockman.LockObject(ctx, snapshot)
 	defer lockman.ReleaseObject(ctx, snapshot)
 
-	err := snapshot.ValidateDeleteCondition(ctx)
+	err := snapshot.ValidatePurgeCondition(ctx)
 	if err != nil {
-		return err
+		return errors.Wrapf(err, "ValidatePurgeCondition for snapshot %s(%s)", snapshot.Name, snapshot.Id)
 	}
 	return snapshot.RealDelete(ctx, userCred)
 }
diff --git a/pkg/compute/models/snapshots.go b/pkg/compute/models/snapshots.go
index 088aa22827..ddda9b41ea 100644
--- a/pkg/compute/models/snapshots.go
+++ b/pkg/compute/models/snapshots.go
@@ -621,6 +621,10 @@ func (self *SSnapshot) ValidateDeleteCondition(ctx context.Context) error {
 	if self.Status == api.SNAPSHOT_DELETING {
 		return httperrors.NewBadRequestError("Cannot delete snapshot in status %s", self.Status)
 	}
+	return self.ValidatePurgeCondition(ctx)
+}
+
+func (self *SSnapshot) ValidatePurgeCondition(ctx context.Context) error {
 	count, err := InstanceSnapshotJointManager.Query().Equals("snapshot_id", self.Id).CountWithError()
 	if err != nil {
 		return httperrors.NewInternalServerError("Fetch instance snapshot error %s", err)