Using induction heating could reach a high efficiency, high quality, and low pollution system . The heating technique is important in related fields,especially in the rapid heating on the surface of metal. In this thesis, we discuss the bonding of circuit boards by high frequency induction heating. A load series resonant induction heating system with voltage source full bridge inverter has been constructed and tested . The system can reach reducing switching losses, component stress, and electromagnetic interference of power semiconductor devices, therefore high heating efficiency is reached. Finally, the control characteristics and whole efficiency were measured and analyzed.