The induction heating process could reach high efficiency, high quality, and low pollution . The heating technique is important in related fields, especially in the rapid heating on the surface of metal. In this thesis, a high frequency induction heater for heating of conducting working piece has been designed. A load series resonant induction heating system with voltage source full bridge inverter has been constructed and tested . The system can reach low switching losses, low component stresses, and low electromagnetic interferences of power semiconductor devices. Finally, the control characteristics, efficiency, and experiment results with different parameters were measured and analyzed.