Self-treatment is not recommended for chronic laryngitis and there are various types involved in between. These include chronic simple laryngitis, chronic hypertrophic laryngitis, and dry laryngitis, which can be treated with medication, laser therapy, electrocoagulation, and ultrasonic nebulization. 1. Chronic simple laryngitis: generally use gargles to keep the throat area clean, such as the use of compound borax and furacilin solution. Topically, silver nitrate solution and compound iodized glycerin can be used, with anti-inflammatory and astringent effects. 2. Chronic hypertrophic laryngitis: the general treatment is more difficult, you can refer to the chronic simple laryngitis, in addition to the above methods, but also need to use laser treatment, electrocoagulation treatment. Chemical drugs will choose weak acid solution as well as silver nitrate. 3. Dry laryngitis: dry laryngitis is not recommended to use the burning method, you can use in the throat area to apply a small dose of iodine, can effectively promote the mucosal epithelial secretion, in addition to the choice of ultrasonic nebulization treatment. All of the above drugs should be used under the guidance of a doctor. The treatment of chronic laryngitis needs to be tailored to the actual cause of the disease, so it is recommended to go to a regular hospital in a timely manner, under the guidance of the doctor to receive standardized treatment.