The utility model provides a conveying belt cleaning device, which comprises a motor, the motor passes through the coupling joint with the transmission shaft, the both sides of transmission shaft are supported by small -size antifriction bearing, small -size antifriction bearing fixes in the bearing frame, drive sprocket fixes on the transmission shaft, drive sprocket and driven sprocket are connected to the chain, driven sprocket fixes the one side at the cylinder main shaft, the cylinder is fixed in the opposite side of cylinder main shaft, the cylinder facial make -up has the brush, the cylinder main shaft is fixed in the upper bracket through large -scale antifriction bearing, go up scaffold weldment in the backup pad, the bottom of backup pad is supported by four cams, each screw rod is cast there are two cams, screw rod both ends welding regulating handle, the screw rod is fixed in the lower carriage through the nut, scaffold weldment is on the base down, the utility model provides a continuously supply with power, in time adjust the conveying belt cleaning device of frush sweeper, can thoroughly clean the material of pasting on the return stroke conveyer belt, alleviate the wearing and tearing of conveyer belt in the return stroke section to the life of extension conveyer belt.