There are physiological causes such as bad habits, and pathological causes such as peripheral facial paralysis and central facial paralysis, etc. Different causes have corresponding treatments and need to be analyzed specifically. 1. Physiological causes: mainly caused by bad habits, such as long-term chewing on one side of the meal, resulting in unilateral chewing muscles developed, the mouth tends to be crooked to the side of the developed muscles when smiling, so the first thing to do is to change the bad habits, in the future life with both sides of the teeth chewing food, and can be gradually relieved. 2. Pathologic causes (1) Peripheral facial paralysis: It is mainly facial neuritis caused by viral infection, and one side of the facial muscle is paralyzed. Early patients can be treated with hormone therapy, such as prednisone, etc., and at the same time, nutritive nerve drugs, such as methylcobalamin, etc., are used to improve the symptoms, and the symptoms can generally be improved through treatment. (2) Central facial paralysis: it is mostly caused by cerebrovascular diseases. If it is cerebral infarction, thrombolysis and thrombolysis should be carried out in time, and at the same time, antiplatelet aggregation drugs such as aspirin and atorvastatin should be given, and microcirculation drugs such as butylphthalide should be given; if it is cerebral hemorrhage, it is necessary to carry out timely surgical treatment. Both should be combined with rehabilitation therapy, facial paralysis symptoms can be gradually recovered. The patient appears to smile to one side of the mouth crooked must pay attention to, if it is caused by lifestyle habits to change bad habits, but also be alert to the disease factors caused by, to go to the hospital in a timely manner to carry out relevant examinations, to clarify the cause of the disease to comply with the doctor’s instructions for treatment, do not blindly use medication, so as not to cover up the condition, delaying the optimal time for treatment. The following is a list of the most important things you can do for your business,