The invention provides an induction heating device and a control method of the induction heating device, wherein the induction heating device comprises an induction coil and a magnetizer, the induction coil can shift relative to a heated object, moreover, after the induction coil is excited, the heated object can be heated, but the magnetizer is arranged at a preset position adjacent to the induction coil, after the induction coil is excited, the magnetizer can be arranged at one side of the induction coil adjacent to the heated object, so that a magnetic field separation effect is taken; or the magnetizer is arranged one side of the induction coil far away from the heated object, so that a magnetic field enhancement effect is taken.