diff --git a/pkg/scheduler/algorithm/predicates/class_metadata_predicate.go b/pkg/scheduler/algorithm/predicates/class_metadata_predicate.go
index a6b13f4b0b..74118cc0fd 100644
--- a/pkg/scheduler/algorithm/predicates/class_metadata_predicate.go
+++ b/pkg/scheduler/algorithm/predicates/class_metadata_predicate.go
@@ -18,11 +18,13 @@ import (
 	"context"
 	"fmt"
 
+	"yunion.io/x/jsonutils"
 	"yunion.io/x/pkg/errors"
 
 	"yunion.io/x/onecloud/pkg/cloudcommon/db"
 	"yunion.io/x/onecloud/pkg/compute/models"
 	"yunion.io/x/onecloud/pkg/scheduler/core"
+	"yunion.io/x/onecloud/pkg/util/rbacutils"
 )
 
 type ClassMetadataPredicate struct {
@@ -97,8 +99,13 @@ func (p *ClassMetadataPredicate) PreExecute(u *core.Unit, cs []core.Candidater)
 		if err != nil {
 			return false, errors.Wrapf(err, "unable to fetch cachedimage %s", disks[0].ImageId)
 		}
-		stand = &obj.SStandaloneAnonResourceBase
-		guestSource.keyword = "image"
+		// no check if image if system public image
+		public := jsonutils.QueryBoolean(obj.Info, "is_public", false)
+		publicScope, _ := obj.Info.GetString("public_scope")
+		if !public || publicScope != string(rbacutils.ScopeSystem) {
+			stand = &obj.SStandaloneAnonResourceBase
+			guestSource.keyword = "image"
+		}
 	case disks[0].SnapshotId != "":
 		obj, err := models.SnapshotManager.FetchById(disks[0].SnapshotId)
 		if err != nil {