Catgut embedding is a surgical method of making a small incision in eyelid to accommodate suture and then suturing it inside the skin. It is suitable for surgical patients with thin eyelids and little fat. Its biggest advantage is simple operation, easy to master and less trauma. The ligature line is fixed between the upper eyelid dermis and the levator palpebrae aponeurosis in front of the tarsal plate or the upper edge of the tarsal plate, and the appearance of the fold is natural; No incision, little postoperative tissue reaction, no influence on work, easy to be accepted by patients. Very natural and beautiful.