The utility model relates to the technical field of drilling and blasting construction machinery. The utility model relates to a formwork, in particular to a formwork cleaning device for a formwork trolley. According to the utility model, the guide rails along the circumference of the template are arranged on the two sides of the template; a circumferential walking mechanism capable of walking onthe guide rail is arranged; a lead screw is installed between the two circumferential walking mechanisms. Motor-driven rotation of lead screw, therefore, the walking trolley mounted on the lead screwis driven to move; a motor on the walking trolley controls the grinding wheel to rotate; therefore, the working surface of the template is cleaned, the release agent is sprayed onto the template through the nozzle; by means of the device, automatic cleaning of the formwork and automatic spraying of the release agent are achieved, the construction cost is effectively reduced, the construction efficiency is improved, manual work is replaced with the device, and the potential safety hazard that when the formwork is cleaned, workers may fall off due to carelessness of the workers or other factorsis effectively avoided.