How long it takes for your mouth to recover from facial paralysis depends on the cause of the paralysis and your physical condition. It can be as short as one month or as long as three months or even longer. 1. If the cause of the crooked mouth of facial paralysis is caused by facial neuritis, the recovery time can be around one month. For patients with better physical condition, the recovery time may be shorter. 3. If the cause of facial paralysis is caused by cerebrovascular disease, such as cerebral infarction, cerebral hemorrhage, etc., the recovery time for mouth symptoms is longer, which may take three months or more, and some people may even not be able to recover for the rest of their lives. In addition, for people of advanced age, weak constitution, diabetes and other underlying diseases, recovery from facial paralysis will be slower and more difficult, and effective treatments should be taken to promote recovery, for which you can consult a medical professional.