The main causes of hoarseness are: 1. Vocal cord strain and lesions caused by lifestyle habits. The problem of living habits includes talking too much, too loud, singing a lot, addiction to smoking and alcohol, wrong way of speaking, and other reasons. 2, hoarseness caused by inflammation of the voice. Acute laryngitis vocal cord redness and swelling, chronic laryngitis vocal cord hypertrophy, the voice will become low and hoarse. Zheng Hainong, Department of Otolaryngology, Zhejiang Hospital 3, poor vocal cord tension such as vocal cord relaxation, can not be tightened, the formation of a shuttle-shaped gap between the vocal cords when closed, the closure is not tight, resulting in hoarseness. 4, vocal cord polyps cause hoarseness. According to the introduction, similar to the vocal cord polyps lead to hoarseness, speak with difficulty in many cases, patients have more than over pronunciation. How to treat chronic laryngitis: 1, abstinence: regardless of whether the vocal cords have bleeding, abstinence is the primary measure necessary. Patients should not speak for 2-3 days. 2, the use of antibiotics and hormones: the application of antibiotics is to control the infection of the upper respiratory tract and eliminate inflammatory lesions of the upper respiratory tract such as the vocal cords. The hormone lies in its elimination of inflammatory lesions such as vocal cord congestion, as well as its immunosuppressive effects, reducing the formation and release of histamine, 5-hydroxytryptamine and other active substances thus reducing allergic reactions and reducing vascular permeability. 3.Drug ultrasonic nebulization inhalation: the drug is nebulized into particles by ultrasound to make it evenly distributed in the larynx. 4.Drug steam inhalation: the commonly used drug is compound benzoin tincture, which has a strong expectorant and anti-inflammatory effect. 5.Physical therapy: computerized medium frequency or TDP radiation therapy. 6.Emergency treatment: In special cases, the voice can’t be rested, use dexamethasone sodium phosphate with calcium gluconate and vitamin C, injected quietly, a few hours before using the voice. 7, quit smoking, alcohol, spicy, coffee, strong tea, avoid eating all stimulating food, such as ginger, squash, garlic, mustard (mustard), etc.; eat less fried, fried, greasy, too sweet and too salty food; eat less fried food such as melon seeds, peanuts, etc., because they have heat can hurt Yin, while in the process of eating lose a lot of saliva, further damage Yin law, so that the throat lack of nourishment; eat less hot food on fire, such as leeks etc.; eat more mung beans, lilies, silver fungus, lotus seeds, loofah, lentils, kelp, winter melon, etc.