The invention relates to an ultrasonic billiards-ball cleaning method, comprising three main steps of cleaning, rinsing and airing with ionic wind, wherein in each step, revolution is carried out with preset radius and rotation speed, around a rotation central shaft so as to match the billiards-balls for eliminating blind spots and cleaning completely. A special cleaning solution and a special rinsing solution are matched in the steps of cleaning and rinsing. The invention relates to a set of ultrasonic billiards-ball cleaning device in the embodiment of the method. The device mainly comprises a ball delivery system, a cleaning tank, an ultrasonic generating system, a cleaning solution injecting and recycling system, a rinsing solution injecting and recycling system, an ionic wind generation system and a central control system. The method and the device in the invention are more complete on cleaning the billiards balls and all-pervasive on microcosmic pin holes and cleaning blind spots of pits, and can be used for completely clearing special dirt and chalk on the balls, therefore, the balls are integrally consistent in cleanness, static electricity is cleared more completely, and moreover, the invention has the advantages of safer operation, higher working efficiency, energy saving and environmental protection.