The main symptoms of laryngeal paralysis are hoarseness, choking and coughing, difficulty in swallowing and other laryngeal dysfunctions. According to the laryngeal paralysis lesion site is divided into central and peripheral two kinds, clinically peripheral is more common, due to the left side of the laryngeal recurrent nerve than the right side of the longer, so the incidence of the left side of the more than the right side. Patients with laryngeal paralysis need to systematically investigate the lung, thyroid and gastroscopy to exclude the symptoms of laryngeal paralysis caused by sympathetic nerve compression by tumor. Some patients are due to central causes, mostly in patients with cerebral hemorrhage, cerebral infarction or cerebral thrombosis. Once the patient has hoarseness, choking on drinking water, difficulty in swallowing and other symptoms, need to first clarify the cause of the disease, according to the cause of the symptomatic treatment can be.