The utility model belongs to the field of transmission line anti-fouling flash devices, and particularly relates to porcelain bottle insulator cleaning coating equipment, which comprises a cleaning support and a coating support, wherein the cleaning support and the coating support are connected through a connecting rod; a first insulating strip is fixed in the cleaning support; bristles are installed on the inner side of the first insulating strip; a second insulating strip is fixed in the coating support; sponge is installed on the inner side of the second insulating strip; the inside of the coating support is hollow; a feeding hole is formed in the side wall of the coating support; through holes are distributed in the second insulating strip; the axial cross sections, corresponding to porcelain bottle insulators, of the first insulating strip and the second insulating strip are set to be M-shaped. By adopting the porcelain bottle insulator cleaning coating equipment, cleaning of the porcelain bottle insulators and coating of an RTV material are combined, the work of porcelain bottle cleaning and RTV coating can be performed simultaneously, and the efficiency of porcelain bottle cleaning and coating can greatly improved; meanwhile, a surrounding structure is adopted, coating of the RTV material can be more uniform on the premise of meeting the requirement of technological procedures, and the material waste is effectively reduced.