Injuries to the superior laryngeal nerve often result in abnormalities in the human voice, the inability to produce a high and monotonous voice. You can make some recovery of the injured supraglottic nerve function by vocal training, developing good eating habits and adopting some medical-surgical methods. 1.Vocal training. Under the guidance of the doctor, the patient undergoes a series of training to relieve the symptoms caused by the supraglottic nerve injury. 2.Cultivate good eating habits. Avoid long-term consumption of stimulating spicy food and smoking and drinking, because these bad habits are likely to cause chronic diseases of the vocal cord mucosa, chronic laryngitis, so that the symptoms of supraglottic nerve injury aggravate. 3, the use of medical technology means. Patients can use acupuncture, or take vitamin B1 for medical treatment. If, after examination, the nerve is compressed or even severed, a nerve release anastomosis can be used. However, this is a rare case. In summary, the supraglottic nerve injury should be treated promptly, mostly by vocal training, acupuncture, medication, diet, etc. In severe cases, surgery is required. The supraglottic nerve is an important vocal organ in the human body, so it is important to seek medical attention immediately after a problem occurs and to protect the vocal cords scientifically and reasonably so as not to hinder communication.