About 20% of patients with facial paralysis have sequelae, mainly because the initial onset of the disease is more serious, the facial nerve root is irreversibly damaged (e.g. damage to the myelin part of the nerve, etc.), and secondly, when the basic condition of the patient is poor, it also affects its recovery, such as patients with diabetes, hypertension, stroke, insomnia and other illnesses, in general, the recovery is slower, which can easily lead to the emergence of sequelae. Secondly, the patient fails to consult the doctor in time and misses the best time for treatment, and there is no lack of such patients in the clinic, of course, if the treatment is not proper, it will also cause further damage to the facial nerve and cause the sequelae of facial paralysis, and the above situations are more common in the clinic, and the patient should take this as a warning and strive for early recovery.