Obstructive sleep apnea hypoventilation syndrome (QSAHS), commonly known as snoring or snoring, is defined as apnea and hypoventilation caused by collapsed obstruction of the upper airway during sleep, usually accompanied by snoring, sleep structural disorders, frequent blood sample saturation decreases, daytime drowsiness, inattention and other conditions, and may lead to multi-organ and multi-system damage such as hypertension, coronary heart disease and diabetes mellitus type II. Common causes: The pathogenesis of snoring is mainly caused by obstruction or narrowing of the upper respiratory tract during sleep, therefore, narrowing or obstruction in any part from the nasal cavity to the trachea may lead to apnea, and the following diseases are common: 1. Nasal diseases: nasal narrowing or obstruction caused by various reasons, such as acute and chronic rhinitis, sinusitis, deviated nasal septum, nasal adhesions, nasal polyps, nasal sinus tumors, etc.; 2, Nasopharyngeal diseases: common are adenoid hypertrophy, nasopharyngeal tumor, nasopharyngeal cavity atresia, skull base tumor, etc.; 3. Oropharyngeal diseases: such as tonsillar hypertrophy, soft palate hypoplasia, hypertrophy, palatal lobe overgrowth, hypertrophy, oropharyngeal cavity scar stenosis, parapharyngeal gap tumor, etc.; Hypopharyngeal diseases: such as tongue root hypertrophy or lymphoid tissue hyperplasia, tongue root tumor, epiglottic cyst, epiglottic tumor, hypopharyngeal tumor, etc.; 5. Oral diseases: Such as hypertrophy of tongue or giant tongue, tumor of tongue, tongue root and floor of mouth, congenital small mandible or mandibular recession, etc.; 6. Other diseases: pathological obesity, acromegaly, hypothyroidism, giant tumor of neck, etc. Clinical manifestations: mainly manifested as snoring and apnea during sleep, mostly accompanied by breath-holding, in severe cases, sudden awakening during sleep, feeling panic, chest tightness, shortness of breath; poor spirit during the day, easy drowsiness, fatigue, some patients can fall asleep immediately and cannot be controlled, sometimes falling asleep during meetings, falling asleep at work, falling asleep when talking with each other, falling asleep when eating, even falling asleep while riding a bicycle; long-term chronic hypoxia can lead to personality changes, including impatience, depression, hallucinations, extreme sensitivity, hostility, hyperactivity, susceptibility to misbehavior, jealousy, suspicion, anxiety and frustration, intellectual and memory loss and sexual dysfunction, etc. Serious cases can be accompanied by disease manifestations of cardiovascular system and other important vital organs. The incidence of hypertension, heart disease and diabetes in snoring population is significantly higher than normal population, and snoring may lead to uncontrollable hypertension and diabetes. The main hazards are: (1) causing or aggravating hypertension; (2) coronary heart disease, nocturnal angina, myocardial infarction; (3) serious arrhythmia at night; (4) recurrent left heart failure at night; (5) cerebral thrombosis, cerebral hemorrhage; (6) seizure; (7) dementia; (8) mental abnormalities: anxiety, depression, strange behavior, personality change, hallucination, hallucination; (9) pulmonary hypertension, pulmonary heart disease; (10) mental abnormalities: anxiety, depression, strange behavior, personality change, hallucination, hallucination; (11) pulmonary hypertension, pulmonary heart disease, pulmonary heart disease; (10) respiratory failure; (11) nocturnal asthma; (12) secondary erythrocytosis, increased blood viscosity; (13) enuresis; (14) sexual dysfunction: impotence, decreased libido; (15) gastroesophageal reflux; (16) neurasthenia; (17) diabetes mellitus; (18) increased obesity; (19) delayed pediatric development, etc. Diagnosis: Snoring and recurrent apnea during sleep, usually accompanied by daytime inattention, drowsiness, easy fatigue, mood disorders; multichannel sleep monitoring (PSG) AHI ≥ 5 times/hour, with predominantly obstructive breathing time. Treatment: At present, there are two main methods of snoring treatment, one is surgery; the other is non-invasive ventilator-assisted ventilation treatment, and a suitable treatment plan should be selected according to different conditions and obstruction sites.