A switch device of the present invention includes a case having a through hole; a cylindrical member attached to the through hole of the case; and an operating member having a shaft section inserted into the cylindrical member and an operating section provided in an outer end portion of the shaft section, wherein the operating member is provided with an engaging projected section, and has a spring member, wherein the cylindrical member is provided with, in an end portion in an outer direction of the case, a release groove where the engaging projected section is movable in an axial direction, and a restricting projected section which restricts movement to the outer direction of the engaging projected section, wherein the cylindrical member is provided with a lock groove which locks the spring member.