The present invention provides a barber/beauty chair which can freely set the lowest position and a movable area of an ascendable/descendable seat part as well as hoist and lower the seat part horizontally without displacement of the center position of the seat part. The barber/beauty chair according to the present invention comprises a hoisting/lowering mechanism which is constituted by a frame 31 stood on a base, a link bracket 31, a pedestal part 33 for supporting a seat part 24, a first parallel link 50 having one end attached to the frame 31 and the other end attached to the link bracket 32, a second parallel link 60 having one end attached to the pedestal part 33 and the other end attached to the link bracket 32, a third link rod 70 for connecting the first parallel link 50 and the second parallel link 60, and an oil hydraulic cylinder 80 connected to the second parallel link 60.