Eye bags mostly occur in middle-aged and older people over 40 years old, and are closely related to human aging and facial tissue aging, histological formation of eye bags on the main reasons are four: 1, lower eyelid skin elasticity weakening, sagging; 2, lower eyelid orbicularis muscle degenerative changes, elasticity weakening, relaxation and atrophy; 3, orbital septum degeneration and relaxation, weakening support; 4, orbital fat degeneration displacement, or orbital fat hyperplasia caused by too much. 5, Of course some young people also have under-eye bags, mostly related to family genetic factors, which can be considered as a congenital change. At present, there are mainly external and internal methods of eye bag surgery, different methods are used for different groups of people, and the patient needs to be evaluated before surgery to choose the appropriate surgical method. The external method is more suitable for lower eyelid bags, especially for the treatment of moderate and severe bags, because the external method can remove the excess skin and muscle and smooth the local tissues; while the internal method can only be applied to young people with no significant skin laxity and slight bulging bags because the front wall tissue of the bags cannot be treated at the same time. Eye bags are a kind of cosmetic surgery, and there are more postoperative complications, such as common bleeding and infection, so it is recommended to go to regular public hospitals for treatment.