Spoiler and vehicle

The embodiment of the utility model provides a spoiler for a vehicle and the vehicle. The spoiler comprises an upper decoration plate and a lower decoration plate which are connected; the lower decoration plate is sunken downwards in the first direction L1 in the direction facing the center area to form an arc shape so that a cavity can be defined between the lower decoration plate and the upper decoration plate, a first supporting convex rib protruding upwards is arranged on the upper side surface of the lower decoration plate, and the upper end face of the first supporting convex rib is connected with the lower side surface of the upper decoration plate in an adhesive mode. According to the technology of the embodiment of the invention, the structural strength of the spoiler is improved, the situation that the connection performance of the upper decoration plate and the lower decoration plate becomes poor due to oxidation corrosion of the metal fastener is avoided, and the connection reliability between the