Cylinder cover and engine

The utility model relates to the technical field of engines, in particular to a cylinder cover and an engine. The air cylinder cover comprises an air cylinder cover body and an air cylinder cover bottom plate, the air cylinder cover bottom plate and the air cylinder cover body are connected in a split mode, the air cylinder cover body and the air cylinder cover bottom plate are made of different materials, the air cylinder cover bottom plate is provided with an air inlet channel and an exhaust channel, and the air inlet channel at least comprises a first conical surface directly attached to a sealing conical surface of an air inlet valve. The exhaust passage at least comprises a second conical surface directly attached to the sealing conical surface of the exhaust valve. Due to the fact that the cylinder cover body and the cylinder cover bottom plate are made of different materials, the requirement that the cylinder cover bottom plate can be sealed with a valve can be met, the first conical surface is directl