Snoring is a phenomenon we often see in our life, simple snoring does not affect health, but snoring with apnea for ten or even tens of seconds affects health and becomes a disease. Adults who have at least 30 apneas during 7 hours of sleep, with each apnea lasting at least 10 seconds or more, or whose apnea index (i.e. the average number of apneas per hour) is greater than 5, are said to have sleep apnea syndrome. Sleep apnea syndrome caused by obstructive lesions in the upper airway is called obstructive sleep apnea syndrome. Since snoring occurs during sleep, it is a slow process to which people gradually adapt, and many people think that snoring is just a sign of a ripe sleep and are not sufficiently aware of the potential danger of their disease. So how to screen the severity of snoring? What conditions require treatment? If the following symptoms appear: frequent breathing stops during sleep; repeatedly waking up during sleep, headache after waking up; angina pectoris, heart rhythm disorder, and elevated blood pressure at night; daytime lethargy and drowsiness; memory loss, slow reaction, and low work efficiency, etc., it is necessary to pay attention to them. As snoring makes sleep breathing repeatedly suspended, causing serious lack of oxygen to the brain and blood, forming hypoxemia, and can induce respiratory diseases and hypertension, coronary heart disease, cerebrovascular accidents and other cardiovascular diseases. Apnea time exceeding 120 seconds is prone to sudden death. In addition to a specialist examination to screen for causes of upper airway stenosis, sleep apnea monitoring (PSG examination) should be performed, which is an objective basis for determining obstructive sleep apnea syndrome. Depending on the results of the examination, the physician will choose between non-surgical or surgical treatment.