diff --git a/pkg/apis/const.go b/pkg/apis/const.go
index 8d0531a4d7..ef80357a48 100644
--- a/pkg/apis/const.go
+++ b/pkg/apis/const.go
@@ -175,6 +175,10 @@ func IsARM(osArch string) bool {
 	return utils.IsInStringArray(osArch, ARCH_ARM)
 }
 
+func IsX86(osArch string) bool {
+	return utils.IsInStringArray(osArch, ARCH_X86)
+}
+
 func IsIllegalSearchDomain(domain string) bool {
 	switch domain {
 	case "cloud.onecloud.io":
@@ -182,3 +186,16 @@ func IsIllegalSearchDomain(domain string) bool {
 	}
 	return false
 }
+
+func IsSameArch(arch1, arch2 string) bool {
+	if arch1 == arch2 {
+		return true
+	}
+	if IsARM(arch1) && IsARM(arch2) {
+		return true
+	}
+	if IsX86(arch1) && IsX86(arch2) {
+		return true
+	}
+	return false
+}
diff --git a/pkg/compute/models/guest_actions.go b/pkg/compute/models/guest_actions.go
index d6ac7c64cc..df55000b68 100644
--- a/pkg/compute/models/guest_actions.go
+++ b/pkg/compute/models/guest_actions.go
@@ -1919,9 +1919,11 @@ func (self *SGuest) PerformRebuildRoot(
 		}
 
 		// compare os arch
-		if len(self.InstanceType) > 0 {
+		if len(img.Properties["os_arch"]) > 0 && len(self.OsArch) > 0 && !apis.IsSameArch(self.OsArch, img.Properties["os_arch"]) {
+			return nil, httperrors.NewConflictError("root disk image(%s) and guest(%s) OsArch mismatch", img.Properties["os_arch"], self.OsArch)
+		} else if len(self.InstanceType) > 0 {
 			sku, _ := ServerSkuManager.FetchSkuByNameAndProvider(self.InstanceType, region.Provider, true)
-			if sku != nil && len(sku.CpuArch) > 0 && len(img.Properties["os_arch"]) > 0 && !strings.Contains(img.Properties["os_arch"], sku.CpuArch) {
+			if sku != nil && len(sku.CpuArch) > 0 && len(img.Properties["os_arch"]) > 0 && !apis.IsSameArch(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)
 			}
 		}