The upper airway of sleep snorers is usually narrower than normal, when the airflow passes through this narrow part, it causes soft tissue vibration, which produces snoring. The main reasons for the formation of upper airway narrowing include: 1, obesity 2, tongue hypertrophy, tongue tumor 3, low hanging soft palate 4, hypertrophy of the uvula 5, deviated nasal septum, hypertrophy of the turbinate 6, tonsils and adenoids hyperplasia 7, small mandibular deformity, mandibular retrusion deformity 8, nasopharyngeal tumors 9, with the increase in the age of the upper airway muscles relax 10, endocrine disorders