Snoring is the nose or mouth according to the patient’s personal situation, clinical analysis of the following: First, the nose is not ventilated, pharyngeal cavity inspection, there is no obvious narrowing, snoring, breathing sound coarse may be caused by the nose, mainly airflow through the nasal cavity when the narrowing of the nasal cavity, the formation of abnormal sound in the nasal cavity. Secondly, the nose is well ventilated, but there is narrowing of the pharyngeal cavity, such as soft palate collapse, tonsil hypertrophy, snoring may be related to the narrowing of the pharyngeal cavity and other factors, the airflow through the narrow part of the friction sound. Third, both the nose is not ventilated at the same time there are pharyngeal stenosis, snoring sound is the nose and the pharyngeal cavity together to form the sound. Clinically, it is recommended to check the situation of nose and pharyngeal cavity in the ENT department to see what is narrowed, and to improve the sleep apnea monitoring to determine the type of snoring and the severity of snoring, and then decide the relevant treatment plan.