The utility model discloses a hinge type folding chair relates to hinge type folding chair technical field, including chair seat, the upper portion of chair seat is hinged with chair back, the lower portion fixedly connected with self -locking hinge of chair seat, one side fixedly connected with support leg of self -locking hinge, the lower portion fixedly connected with the stopper of chair seat, the outside of support leg is pasted with one side of stopper, the inside of support leg is equipped with the sliding slot, the inside sliding connection of sliding slot has the sliding block, one side fixedly connected with support rod of sliding block, the inside of support leg is provided with reinforcing plate. The utility model discloses the setting of stopper has had the effect of supporting and reinforcing to support leg outside, through the cooperation setting of sliding block, sliding slot, support rod and contraction groove, can support the inside of support leg in the process of using to the effect of dispersion self -locking hinge stress has been played to the purpose that has reached the increase folding chair stability.
