The invention relates to the technical field of calcinators, and specifically relates to a medium-frequency heating calcinator. The medium-frequency heating calcinator comprises a calcinator body, a supporting mechanism, a feeding mechanism, a discharging bin, a temperature control system and a cooling system; the calcinator body is arranged on the supporting mechanism; a feeding opening and a discharging opening are respectively arranged in two ends of the calcinator body; the feeding mechanism is arranged at the feeding port in one end of the calcinator body, and while the discharging bin is arranged at the discharging port in the other end of the calcinator body; a medium-frequency sensing heating device is arranged at the outer part of the calcinator body. The medium-frequency heating calcinator is uniform to heat and easy to be controlled, few impurities are produced, and the produced product is high in quality.