Congenital ptosis is caused by levator palpebralis muscle insufficiency or oculomotor nerve nucleus hypoplasia. When the elderly reach a certain age, it is very likely that their upper eyelids will relax. How to treat it? The skin of the upper eyelid is too slack, which leads to drooping eyelids and reduced vision, so that the old man who was originally slow to move had to turn his head at a large angle to see the objects on both sides. Because the skin of the upper eyelid is slack, it is necessary to open the eyes hard to lift the drooping eyelids, which increases the burden on the eye muscles and makes the elderly easily tired and unwilling to open their eyes. Excessive accumulation of upper eyelid skin will also oppress upper eyelid eyelashes, leading to trichiasis and eye foreign body sensation. To solve this problem, we should choose surgery according to everyone's different situation. In the past, the redundant skin of the upper eyelid was simply removed, and the postoperative effect was not ideal. The eyelid of the elderly has its anatomical characteristics: the eyelid skin becomes thinner, the elasticity decreases, the orbicularis oculi muscle becomes thinner, the loose pedicle tissue becomes thicker, and the orbital septum becomes thicker or thinner; The levator palpebrae superioris muscle and its aponeurosis tissue became thinner, the lacrimal gland became hypertrophy and drooping, and the eyebrows moved down. Therefore, the repair of eyelid skin relaxation in the elderly can not simply follow the method of double eyelid plastic surgery, but should be carried out according to its anatomical and physiological characteristics in order to restore physiological functions and beautify the face. During the operation, it is necessary not only to remove redundant skin, but also to shorten the aponeurosis of levator palpebrae superioris to prevent senile ptosis caused by the degeneration of the upper eyelid muscle, and to fix the drooping lacrimal gland at the same time. In the operation, it is especially necessary to distinguish the hypertrophic and drooping lacrimal gland from the prolapsed fat. Therefore, plastic surgeons must be familiar with the anatomical characteristics of the elderly eyelids in order to carry out plastic surgery on the elderly eyelids. The key to successful blepharoptosis surgery: 1. Choose a good surgical method: the frontalis muscle flap moves down and hangs. This kind of blepharoptosis surgery is suitable for any type of blepharoptosis, especially severe blepharoptosis, but the frontalis muscle of the beauty seeker should be functional. Mild and moderate ptosis can be corrected by shortening levator palpebrae superioris muscle. 2. Adjust the height of blepharoptosis: No matter what kind of blepharoptosis surgery is used to correct blepharoptosis, the height of blepharoptosis should be adjusted. 3, the fixed position of the tarsal plate should be appropriate: no matter what kind of blepharoptosis surgery, the fixed three-point position on the tarsal plate should be appropriate. 4. When the frontalis muscle flap is suspended downward, the whole frontalis muscle flap (including the part transferred to the upper eyelid) has good contraction function, which is the basis of successful operation.