Office chair capable of automatically adjusting angle

The invention relates to the technical field of office chairs. The invention discloses an office chair capable of automatically adjusting the angle. The office chair comprises a first supporting plate, and the outer side of the first supporting plate is fixedly connected with a gear. A first fixing rod is fixedly connected to the outer side of the first supporting plate, a reset torsional spring is fixedly connected to the outer side of the first fixing shaft, the reset torsional spring is movably connected with the first fixing rod, a supporting rod is movably connected to the bottom of the chair body, and a second fixing plate is fixedly connected to the top of the supporting rod. According to the office chair capable of automatically adjusting the angle, the gear is fixedly connected tothe outer side of a first supporting plate. The outer side of the first supporting plate is fixedly connected with a first fixing rod. The outer side of the first fixing shaft is fixedly connected with the reset torsional sp