Laryngeal edema is an infiltration of tissue fluid under the mucosa in the laryngeal laxity and is divided into two categories: infectious and non-infectious. 1. Infectious: laryngeal edema can be caused by acute laryngitis, acute epiglottitis, acute laryngeal chondromyelitis, laryngeal abscess, laryngeal tuberculosis, laryngeal syphilis, etc., as well as acute purulent inflammation of the pharynx or neck. It can occur within a few hours with laryngeal pain, hoarseness, laryngeal wheezing and dyspnea, and can be accompanied by fever and malignant chill, pain in the throat, and laryngoscopy reveals a deep red edema of the mucosa and a shiny surface. 2, non-infectious: non-infectious laryngeal edema can be caused by heart disease, nephritis, liver cirrhosis, hypothyroidism and other etiologies, allergic and genetic vascular especially rapid onset and rapid development, patients often occur within a few minutes of laryngeal wheezing, hoarseness, dyspnea, and even asphyxia, laryngoscopy can be seen diffuse laryngeal mucosa edema, pale. Laryngeal edema is most commonly associated with acute allergy and inflammation Acute laryngitis and allergic laryngeal edema are two completely different diseases. Acute laryngitis is a type of upper respiratory tract infection. Allergic laryngeal edema is a specific clinical symptom of the body’s allergic reaction anyway. Allergic laryngeal edema is one of the rapid allergic reactions of the respiratory tract, mainly manifested as edema of the submucosal tissue of the larynx, which is life-threatening in severe cases. Early and timely administration of hormone drip is recommended. Facial cyanosis and dyspnea are estimated to have respiratory mucosal edema bronchospasm. Epinephrine can be used if the blood pressure drops. Chronic inflammation of the laryngeal mucosa and vocal cords, mostly in adults, is seen in occupations that use the voice. It is often caused by recurrent attacks of acute laryngitis or is not completely cured. Some patients can gradually occur due to long-term excessive use of the voice or improper methods of occurrence, mostly related to occupation. The effect of chronic inflammatory lesions in the nasal cavity, sinuses and pharynx. Long-term hyperventilation and excessive addiction to alcohol and tobacco. Long-term air pollution, stimulation of chronic inflammatory secretions in the lower respiratory tract, etc. Dryness and discomfort in the throat, foreign body sensation and hoarseness are the main symptoms. It is recommended to use Chinese herbal medicine topical spray, acupuncture, internal medicine and other comprehensive therapy, the effect is more ideal. And no toxic side effects.