One aspect of the present invention provides a low-profile switch having the reduced number of components and the decreased assembly man-hours. The switch includes: a base (10), in which a flat circular recess (11) is formed on an upper surface and a central fixed contact (15, 16, 16b, 17, 17b) is disposed in an inner surface of the flat circular recess (11); a spring body (20) that includes a bellows shape in which a reference form unit (23) is repetitively formed, the spring body (20) being annularly disposed in the flat circular recess (11) of the base (10); and an operating body (30) that includes a turning unit (31) fitted turnably in the flat circular recess (11) of the base (10), and an operating projection (34) being provided in an inward surface of the turning unit (31). When the operating body (30) is turned, the operating projection (34) presses an end portion (21, 22) of the spring body (20) to compress the spring body (20), which allows a contact to be switched.