Traditional aviation DC contactors have some defects such as poor dynamic characteristics of switches and short electrical life when switching on or breaking off high-power loads. The new silicon carbide device has the advantages of high power density, low on-state resistance and fast switching speed. Aiming at these problems, the design scheme of SiC MOSFET based HVDC hybrid contactor is proposed. When the mechanical contact is on and off, the load is borne by SiC MOSFET triggered by digital/analog control circuit, and the working current is borne by the mechanical contact in steady state, which solves the problems of arc ablation and prolongs the life of contactor effectively. The designed HVDC hybrid contactor has the advantages of no arc, high reliability and long electrical life. It achieves the expected goal of prototype development and lays a solid foundation for the engineering research and application of HVDC hybrid contactor.