The invention discloses an engine valve stopping and closing assembly, and aims at solving the problems that in the prior art, the start and stop losses are large, and the response is slow. The enginevalve stopping and closing assembly comprises a cam, a tappet, a cylinder, a valve spring, a valve guide pipe, a valve base, a valve, a valve lock block, a valve spring base, a reset spring, a pistonsliding way, a reset piston, an oil way, a stop piston and a limiting hole. The cam, the tappet and the valve are sequentially arranged in the cylinder from top to bottom, the stop piston and the oilway in the cylinder are connected, the reset piston is arranged at the position of the limiting hole in the tappet and connected to the tappet through the reset spring, the valve is arranged under the tappet and is in plane contact, and after the valve rod part is fixed through the valve lock block, the valve spring base is driven and connected with the cylinder through the valve spring; the moving direction of the valve is fixed through the valve guide pipe, the valve is arranged on the cylinder, and the valve spring, the valve guide pipe, the valve base, the valve, the valve lock block andthe valve spring base are consistent in center line.