Abstract:Electromagnetic induction heat has been widely used in the project such as Forging, heat treatment, smelting and so on. In the Electromagnetic induction heat system of high power, heat dissipation is one of important factor which influencing the stable operation of the system.Therefore,using the method of simulation,the heat loss is estimated based on the analysis of the heat source and heat loss in the electromagnetic induction heat system. After design of the heatsink and fan in the system, the heat dissipation system is simulated using Flotherm combining with estimation result of heat loss. Finally, the experiment results verify the feasibility of the design method.