The invention provides an intelligent cleaning robot suitable for high-speed railway ballastless track plate molds. The intelligent cleaning robot comprises an I-shaped steel light rail arranged on the ground of a working area; a frame body is arranged above the light rail; rail wheel modules are respectively arranged at two ends of the frame body, and are connected with a speed reducer through couplings A; the speed reducer is connected with a travel servo motor; the frame body is provided with a cleaning system and a dust removing system; and the cleaning system includes a disc-shaped brush assembly, a special-shaped brush roller assembly, a large brush roller and a columnar brush assembly. The intelligent cleaning robot can realize unmanned cleaning work of molds in a production line, realizes intelligent automation, and greatly improves the working efficiency.