Cylinder deactivation gas distribution mechanism, cylinder and engine

The invention provides a cylinder deactivation air distribution mechanism, an air cylinder and an engine, and relates to the technical field of automobile engines, the cylinder deactivation air distribution mechanism comprises a rocker arm, an air valve, a transmission block, a first elastic piece and a driving structure, and the transmission block is used for being arranged between the end of the rocker arm and the end of the air valve; the driving structure is used for driving the transmission block to move so that the transmission block can make contact with or be separated from the end of the air valve, the transmission block makes contact with the end of the rocker arm, the first elastic piece is connected with the transmission block, and the compression direction of the first elastic piece is matched with the swing direction of the rocker arm. When the transmission block makes contact with the end of the valve, the rocker arm swings to enable the transmission block to drive the valve to move so as to op