Droopy eyelids are known as ptosis in medicine, which can be divided into ptosis of the upper eyelid and ptosis of the lower eyelid, in addition to congenital factors, mostly due to ageing, mostly seen in middle-aged and elderly people, plastic surgery in different parts of the surgery varies, and commonly includes the following kinds: First, ptosis of the upper eyelid: 1, partial blepharoplasty: for the ptosis of the degree of light, usually in the crowd of less than 3mm, through the excision of some of the 2, levator muscle shortening: for the upper eyelid muscle function has not been completely lost, and the degree of ptosis of the crowd, according to the degree of ptosis of part of the muscle excision, in order to achieve the purpose of lifting the upper eyelid; 3, frontalis muscle suspension: for the other surgery is ineffective or the muscle function of the crowd is incomplete, the principle of its with the help of nylon threads and other appliances into the lower layers of the skin, to play a fixed role in the support. Lower eyelid ptosis: 1, lower eyelid conjunctival incision blepharoplasty: for eyelid muscle elasticity is good, not see relaxation, but orbital fat is more people, through the excision of orbital fat to improve the shape of the advantages of the skin without incision; 2, skin incision subcutaneous peeling method: for the skin has been sagging, and fat is more people, the surgical separation of orbicularis oculi muscle, pull orbicularis flap at the same time properly fixed to improve the lower eyelid ptosis, the skin can be removed by the skin. Improve lower eyelid ptosis. The advantage is that the incision is small and the postoperative scar is not obvious; 3. Orbital fat retention and orbicularis oris muscle suspension: suitable for middle-aged and elderly people, this group of people with obvious muscle laxity and heavy bags under the eyes, this procedure not only removes the bags under the eyes, but also relieves other symptoms of aging. These surgeries can be performed in conjunction with each other to improve the condition of sagging eyelids. It is also important to note that patients with drooping eyelids due to neurological abnormalities or other diseases need to be treated for the primary disease first, and the patient’s body should be evaluated by a physician before undergoing blepharoplasty.