Bar chair

The utility model relates to a bar chair which comprises a chair seat and further comprises a supporting piece, the height adjusting piece is connected with the supporting piece in a threaded transmission mode; the rotating piece is connected with the chair seat and is arranged on the height adjusting piece in a rotating manner; one end of the driving piece is fixedly arranged on the height adjusting piece, and the other end of the driving piece is hinged to the rotating piece; and a bracket member, the bracket piece is fixedly arranged on the height adjusting piece; the backrest is positioned below the chair seat; the chair solves the technical problems that in the prior art, after a person sits on the chair, the chair needs to be adjusted to a certain height, when the person falls down, the chair needs to be lowered, use is inconvenient, and if the person does not fall down, the person is prone to being injured, and is ingenious in structure, convenient to adjust and wide in application range, harm to the h