To provide a nozzle for a gas breaker superior in electric strength and mechanical strength, and provide its manufacturing method.

A resin composition A is arranged in which 2 wt.% of inorganic filler as a material of high mechanical strength is composed at a mounting part 7 side. Further, a resin composition B is arranged in which 10 wt.% of inorganic filler as a material of high arc-erosion resistant property is composed at a throat part 6 side. Further, as the matrix resin, polytetrafluoroethylene resin is used.