Folding beach chair, by sitting on cloth, cloth hand connect with chair, chair frame by a number of metal work rivets or screws into a set of link mechanism, its characteristic is: the chair frame tube is close to the rivet joint, the inner diameter of the bending moment of greatest danger section into a certain length of the outer diameter, shape, and the strengthening with suitable metal pipe diameter, or reinforcement cover in the chair outside tube and rivet joint, can get the same effect, reinforced by metal or engineering plastic. Chair frame tube of this practical new type USES reinforcement design, make the whole chair weight, saving raw materials.