Sleep snoring, also known as snoring, is a common symptom in otolaryngology and is one of the main symptoms of sleep apnea hypoventilation syndrome, which can be caused by a variety of reasons. Abnormalities or lesions in the anatomical structure of the upper airway include all factors that cause narrowing or obstruction of the nasal cavity and nasopharynx. Common factors that cause snoring in children include adenoid hypertrophy and tonsillar hypertrophy. Other factors such as deviated nasal septum, nasal polyps, chronic rhinosinusitis, nasal turbinate hypertrophy, nasopharyngeal stenosis or atresia, etc.; factors that cause narrowing of oropharyngeal cavity such as palatine tonsil hypertrophy, soft palate hypertrophy, pharyngeal lateral wall hypertrophy, excessive length of uvula, tongue root hypertrophy, tongue body hypertrophy, etc. can lead to poor breathing and cause snoring in sleep. Systemic factors such as obesity, pregnancy, menopause and perimenopause, hypothyroidism, diabetes and other systemic diseases can also induce or aggravate snoring. In addition, central nervous system diseases, neuromuscular diseases, etc. Smokers and alcoholics, smoking and drinking can cause relaxation of the throat muscles after sleep and induce or aggravate snoring. In elderly people, especially elderly men, because of their own muscle relaxation, the pharyngeal muscles become more relaxed when they are asleep, thus causing or aggravating snoring. To sum up, snoring can be caused by a variety of reasons, common factors include adenoid hypertrophy, tonsil hypertrophy, tongue posterior, abnormal jaw and facial bone framework, obesity, tobacco and alcohol addiction and advanced age. Snoring can cause daytime headache, lack of concentration, drowsiness and other symptoms, as well as induce or aggravate many diseases, such as hypertension, heart disease, cerebrovascular disease, etc., which should be taken seriously.