Single-pole single-throw touch switch

The utility model provides a single-pole single-throw touch switch, which comprises a base, a conductive terminal group is arranged in the base, and the conductive terminal group comprises a first conductive terminal and a second conductive terminal which are separated from each other. A containing groove is formed in the middle of the base, an elastic piece is arranged in the containing groove, the elastic piece comprises an edge part and a central part, the edge part is provided with at least three protruding parts, the protruding parts abut against the first conductive terminals, and the central part is located above the second conductive terminals. And a pressing piece is arranged above the central part and is used for controlling the contact and separation of the central part and the second conductive terminal. The elastic piece is similar to a rectangle, the edge corner of the edge part is a round corner or a flat corner or a chamfer, and the central part is an arched arc top protruding upwards. The con