diff --git a/pkg/compute/models/disks.go b/pkg/compute/models/disks.go
index 36717c6852..5bb6012956 100644
--- a/pkg/compute/models/disks.go
+++ b/pkg/compute/models/disks.go
@@ -1749,6 +1749,8 @@ func fillDiskConfigByImage(ctx context.Context, userCred mcclient.TokenCredentia
 		}
 		if strings.Contains(image.Properties["os_arch"], "aarch") {
 			diskConfig.OsArch = api.OS_ARCH_AARCH64
+		} else {
+			diskConfig.OsArch = image.Properties["os_arch"]
 		}
 	}
 	return nil
diff --git a/pkg/compute/models/guest_actions.go b/pkg/compute/models/guest_actions.go
index dbf46ffd7f..beedfb5322 100644
--- a/pkg/compute/models/guest_actions.go
+++ b/pkg/compute/models/guest_actions.go
@@ -1476,6 +1476,16 @@ func (self *SGuest) PerformRebuildRoot(ctx context.Context, userCred mcclient.To
 		if err != nil {
 			return nil, err
 		}
+
+		// compare os arch
+		if len(self.InstanceType) > 0 {
+			provider := GetDriver(self.Hypervisor).GetProvider()
+			sku, _ := ServerSkuManager.FetchSkuByNameAndProvider(self.InstanceType, provider, true)
+			if sku != nil && len(sku.CpuArch) > 0 && len(img.Properties["os_arch"]) > 0 && !strings.Contains(img.Properties["os_arch"], sku.CpuArch) {
+				return nil, httperrors.NewConflictError("root disk image(%s) and sku(%s) architecture mismatch", img.Properties["os_arch"], sku.CpuArch)
+			}
+		}
+
 		diskCat := self.CategorizeDisks()
 		if img.MinDiskMB == 0 || img.Status != imageapi.IMAGE_STATUS_ACTIVE {
 			return nil, httperrors.NewInputParameterError("invlid image")
diff --git a/pkg/compute/models/guests.go b/pkg/compute/models/guests.go
index 8e7358ff6c..aa55f59564 100644
--- a/pkg/compute/models/guests.go
+++ b/pkg/compute/models/guests.go
@@ -1323,7 +1323,7 @@ func (manager *SGuestManager) validateCreateData(
 		input.Disks[0] = rootDiskConfig
 		if sku != nil {
 			if len(rootDiskConfig.OsArch) > 0 && len(sku.CpuArch) > 0 {
-				if strings.Contains(rootDiskConfig.OsArch, sku.CpuArch) {
+				if !strings.Contains(rootDiskConfig.OsArch, sku.CpuArch) {
 					return nil, httperrors.NewConflictError("root disk image(%s) and sku(%s) architecture mismatch", rootDiskConfig.OsArch, sku.CpuArch)
 				}
 			}