Folding seat

A folding seat comprises a seat face frame, a backrest frame, a front supporting foot frame, a rear supporting foot frame, armrests, a frame-shaped hinge frame with an upper opening and a rear hinge assembly, the seat face frame is provided with a front opening, the backrest frame comprises a top transverse rod and a vertical rod, the front supporting foot frame comprises a front bottom transverse rod and a front longitudinal rod, and the rear supporting foot frame comprises a rear bottom transverse rod and a rear longitudinal rod; the handrail is hollow and is provided with a lower opening; the upper ends of a front longitudinal rod of the front supporting leg frame and a rear longitudinal rod of the rear supporting leg frame are hinged to inner cavities of the front ends and the rear ends of the armrests respectively, the middles of the two sides of the chair face frame are hinged to the front longitudinal rod, the rear end of the chair face frame is hinged to the closed end of the frame-shaped hinge frame,