Seat lifting chassis structure

The utility model discloses a seat lifting chassis structure which comprises a seat supporting seat, a pedal, an upper disc body and a lower disc body, the pedal is fixedly installed on the upper disc body, the lower disc body is fixedly installed on the upper surface of the seat supporting seat and located at the treading position, lower baffles are connected to the two edge walls of the lower disc body in an integrally-formed mode, and the lower baffles are fixedly installed on the upper surface of the seat supporting seat. The two edge walls of the upper plate body are connected with upper baffles in an integrally formed mode, the opposite faces of the two lower baffles are connected with the two ends of a lower sliding rod in a sliding mode respectively, the opposite faces of the two upper baffles are connected with the two ends of an upper sliding rod in a sliding mode respectively, and the rod wall of the lower sliding rod is symmetrically and rotationally connected with one ends of first supporting bat