The invention relates to air-blowing deslagging equipment. The air-blowing deslagging equipment comprises a fixed rail main beam (4), a running trolley (3), a motor and an air-blowing system, wherein the air-blowing system is arranged on the head part of a telescopic transmission arm (2); the running trolley (3) is connected with the telescopic transmission arm (2); and the motor is connected with the running trolley (3) and the telescopic transmission arm (2) respectively. The invention further provides a deslagging system and a deslagging method. The air-blowing deslagging equipment can be used together with a deslagging device, and can improve the deslagging efficiency of a ladle, reduce iron loss, shorten deslagging time and reduce deslagging consumption.