Crooked mouth caused by facial nerve is a manifestation of facial paralysis, and the specific treatment mainly includes medication and physical factor therapy as well as massage. 1. Medication: The symptoms of facial paralysis can easily lead to crooked mouth, which is related to the lesion or damage of the facial nerve, and can be treated by taking nerve-nourishing medication under the guidance of the doctor, such as methylcobalamin and B vitamins, which can help to promote the recovery of the nerve function. 2. Physical factor therapy: After diagnosing the symptoms of facial paralysis, you can combine physical factor therapy with medication, such as using low-frequency electrical stimulation to properly stimulate the paralyzed facial muscles and contract the facial muscles, which can improve the phenomenon of crooked mouth and promote the recovery of the condition. 3. Massage: Using massage or hot compresses on the orbicularis oris muscle can promote blood circulation and facilitate the recovery of nerve function. In the process of treatment and recovery, pay attention not to eat spicy and stimulating food, quit smoking and drinking, you can eat more vitamin-rich food. Usually pay attention to the face to keep warm, because the cold stimulation is likely to lead to further aggravation of the symptoms, thus affecting the recovery. Special reminder, it is recommended to go to a regular hospital by a professional doctor for diagnosis and treatment, so as not to delay the condition.