Chronic laryngitis is a chronic nonspecific inflammation of the laryngeal mucosa that lasts more than 3 months and can affect the submucosa and the intralaryngeal muscles. Chronic laryngitis is a common cause of hoarseness. Chronic laryngitis is a chronic inflammation of the mucous membrane of the larynx, mostly in adults, and is the most common laryngeal disease. Chronic laryngitis is mostly formed due to repeated attacks of acute laryngitis or not completely cured and delayed, and some patients can gradually occur due to long-term excessive use of voice or inappropriate vocal methods, which is related to occupation. The predisposing factors are the same as those for chronic laryngitis. Inflammatory lesions in the nasopharynx and nose, long-term breathing through the mouth, a preference for tobacco and alcohol or working in an air-polluted environment, chronic disorders of the lower respiratory tract, and factors such as metabolic disorders, endocrine disorders, and vasodilatory disorders can all contribute to the development of chronic laryngitis, and many patients will suffer from chronic laryngitis at the same time. Based on the patient’s history of hoarseness, increased laryngeal secretions, and laryngeal discomfort for more than 3 months, combined with chronic congestion and swelling of the vocal cords, mucosal thickening or mucosal atrophy with scabs seen under indirect laryngoscopy, direct laryngoscopy, fiberoptic laryngoscopy, or electronic laryngoscopy, a preliminary diagnosis of chronic laryngitis can be made. In conclusion, chronic laryngitis is a chronic non-specific inflammation of the laryngeal mucosa caused by acute laryngitis, excessive use of voice, inappropriate vocalization, and infection of neighboring organs.