Pressing double eyelids with instruments is a patent project of Shanghai Jianwei Plastic Surgery Hospital. Invented by Dr. Zhang Wei, the chief expert of the institute, on 1996, and obtained the national patent. It is a non-surgical double eyelid method using biological welding technology. Compared with incision method and thread embedding method, it has the characteristics of lasting effect, no need to open, natural shape and quick recovery in 3-5 days.