Ptosis is one of the symptoms of facial paralysis, which is a common and frequent disease mainly characterized by motor dysfunction of facial expression muscle groups, and can occur at all ages. Clinical manifestations include disappearance of frontal wrinkles, enlargement of eye fissures, flattening of nasolabial grooves, drooping of the corners of the mouth, and the corners of the mouth being skewed to the side of the key when the teeth are exposed. The sick side cannot make movements such as frowning, frowning, closing the eyes, puffing and pouting; when eating, food residues often remain in the gap between the teeth and cheeks on the sick side, and saliva often drips down from that side. Prevention of ptosis caused by facial paralysis: 1. During the prevention and treatment of facial paralysis, rest should be paid attention to, ensure enough sleep, less watching TV, computer, avoiding all kinds of mental stimulation and excessive fatigue, in order to facilitate the recovery of facial paralysis. 2, facial paralysis patients should do a good job of psychological decompression, in the face of pressure from work, study, socialization, family life and other aspects, learn to self-adjustment, such as: confiding in, listening to music, travel, appropriate exercise, etc. These are effective in the prevention and treatment of facial paralysis. These are effective ways to prevent facial paralysis. 3.Reasonable diet, facial paralysis patients need to eat less greasy stomach, indigestible food. Eat more vegetables and fruits, such as peaches, grapes, bitter melon, eggplant, green peppers, leeks, to maintain enough vitamin intake. Therefore, diet is also very important for the prevention of facial paralysis. 4.Patients with facial paralysis can exercise appropriately, in the morning, evening cooler time according to their own situation to choose some suitable sports, such as: walking, gymnastics, playing tai chi, dancing, etc., long-term adherence to, will improve the physical cycle, the susceptibility to wind-cold and resistance to wind-cold will also be greatly enhanced. These are all belong to the prevention of facial paralysis.