A solid-state combination switch device comprises a mechanical switch QF, a thyristor valve group, an arc extinguishing transformer and an arc extinguishing power supply. The mechanical switch QF is connected with the high-voltage side of the arc extinguishing transformer in series and then connected with the thyristor valve group in parallel; the low-voltage side of the arc extinguishing transformer is connected with the arc extinguishing power supply in parallel; the thyristor valve group is connected with the valve base electronic equipment; the thyristor valve group, the mechanical switchQF and the arc extinguishing power supply respectively act according to opening and closing commands issued by the valve base electronic equipment. The composite switch device provided by the utilitymodel is suitable for a medium-voltage power distribution and utilization system, does not have electric arcs and overvoltage in any working state, is small in energy loss, meets the requirement of frequent working of a switch in medium-voltage power distribution and utilization, prolongs the service life of a mechanical switch, and has very important significance in industrial production.