Piano stool

The utility model discloses a piano stool. Seat box, a cavity is formed in the seat box; the rear side of the seat box is open; a backrest type seat plate is movably arranged at the top of the seat box; wherein the backrest type seat plate comprises a seat plate and a backup plate; the end, away from the backup plate, of the seat plate is rotationally connected with the inner side wall of the topof the seat box through a rotating shaft. A sliding shaft is installed at the joint of the seat plate and the backup plate, an arc-shaped sliding groove matched with the sliding shaft is formed in theside wall of the seat box, a spring is arranged in the arc-shaped sliding groove, the top end of the spring is fixed to the sliding shaft, and the bottom end of the spring is fixed to the bottom wallof the arc-shaped sliding groove. According to the scheme, the piano stool can be suitable for players with different heights, the height of the piano stool can be conveniently adjusted, in addition,the piano stool adopts the