The invention discloses an engine cylinder hole lubricating device. The engine cylinder hole lubricating device comprises an oil storage tank, a plurality of oil spray pipes corresponding to engine cylinder holes, a handle, a connecting plate, an air cylinder and a controller, wherein one ends of the multiple oil spray pipes are connected with the oil storage tank; the other ends of the multiple oil spray pipes are provided with corresponding oil spray holes; the multiple oil spray pipes are provided with oil spray control valves; the multiple oil spray pipes are mounted on the connecting plate; the controller is connected with the air cylinder and the control valves; the air cylinder and the handle are connected with the connecting plate; when engine cylinder holes are lubricated, the controller controls the air cylinder to drive the connecting plate to move downwards, and thus the oil spray holes are located in the corresponding engine cylinder holes. Compared with the prior art, theengine cylinder hole lubricating efficiency and effect are improved.