diff --git a/pkg/compute/models/secgrouprules.go b/pkg/compute/models/secgrouprules.go
index bee17b3c75..0cb58dd2d9 100644
--- a/pkg/compute/models/secgrouprules.go
+++ b/pkg/compute/models/secgrouprules.go
@@ -338,6 +338,10 @@ func (self *SSecurityGroupRule) ValidateUpdateData(ctx context.Context, userCred
 		return input, httperrors.NewOutOfRangeError("Invalid priority %d, must be in range or 1 ~ 100", input.Priority)
 	}
 
+	if len(input.CIDR) == 0 {
+		input.CIDR = self.CIDR
+	}
+
 	if len(input.PeerSecgroupId) > 0 {
 		_, err := validators.ValidateModel(userCred, SecurityGroupManager, &input.PeerSecgroupId)
 		if err != nil {