The application of the invention belongs to the technical field of engine devices and specifically relates to a cylinder cover transport line comprising a transport line, impellers and a cleaning water pipe; two baffles are slidingly installed on the transport line with intervals; the free ends of the two baffles are provided with two magnets with different magnetic poles; the impellers which can be driven by a motor are installed at the outlet of the transport line; the ends of adjacent impellers are made of magnets with different magnetic poles; the ends of the impellers are provided with clamping slots; the tops of two adjacent impellers are provided with a water spray pipe. The present application can carry out batch processing on the cylinder covers on the transport line to prevent the cylinder covers from being extruded out of the transport line due to the accumulation of the cylinder covers.