At present, there are three main types of injectable cosmetic treatments: botulinum toxin; hyaluronic acid; and autologous fat. The essence of the role of the three is no more than wrinkle, fill or reduce the amount of tissue. 1, botulinum toxin Drugs. It reduces muscle contraction by blocking the innervation of motor nerves to muscles. (1) Reduction of skin contraction -> wrinkle. (2) Muscle wasting becomes smaller -→ thin face, thin legs and so on. 2. Hyaluronic acid Preparation, a component extracted from living organisms. Role: has a very high hydration capacity, into the skin, subcutaneous filling of local tissues, play a role in filling. It can be used for wrinkle removal, elimination of wrinkles, rhinoplasty and so on. 3.Autologous fat The patient’s own fat is absorbed during the surgery and injected into the subcutaneous and deep tissues of the affected area. Role: remove wrinkles, temporal augmentation, breast augmentation and so on.