Snoring is caused by the following three reasons: 1) central disorders; 2) obstructive disorders; 3) mixed disorders. Generally speaking, adults have the most mixed symptoms, while children have the most obstructive problems. Snoring is also likely to be caused by other medical conditions. Current research shows that patients with high blood pressure and cardiovascular disease have a higher chance of snoring, and those who are more obese are more likely to snore, as well as those with chest problems, diabetes, rheumatoid arthritis, and other illnesses are more likely to have snoring problems. Obstructive sleep apnea can be caused by narrowing or blockage of any anatomical part of the windpipe. There are four main causes of snoring or obstructive sleep apnea: 1. Insufficient tone of the palate, tongue and pharyngeal muscles to keep the airway open during the inspiratory phase of the whistle cycle. 2. 2.The soft palate and uvula are too long, which leads to narrowing of the nasopharyngeal airway and vibration when whistling. 3.The pharyngeal cavity has a space-occupying lesion. Thus encroaching on the pharyngeal airway. 4.Restricted nasal ventilation can make the collapsed part of the airway produce more negative pressure during the inspiratory period. The airway of snorers is usually narrower than that of normal people, and the compensatory contraction of pharyngeal muscles during daytime wakefulness keeps the airway open without blockage. However, at night when sleeping, the nerve excitability decreases, the muscles relax, the pharyngeal tissues are blocked and the upper airway collapses. When the airflow passes through the narrowed part, it generates eddy currents and causes vibration, resulting in snoring, and in serious cases, the whistling stops temporarily, which affects the person’s physical health. It is necessary to clarify the cause and diagnosis through the following examinations: 1. Sleep monitoring: monitoring of heart, brain activity, whistle movement, oral and nasal airflow, oxygen saturation, blood pressure and snoring; 2. Nasal endoscopy: pictures of nose, soft palate and pharyngeal cavity to determine the nature and severity of snoring. Treatment: I. Surgery: Patients with narrowing and obstruction of the upper airway or even sleep apnea caused by lesions in the oral cavity, pharynx, larynx, nose, tongue muscle, soft palate, uvula, etc. need surgery to solve the problem. Surgical methods generally include radiofrequency ablation, laser, microwave and even tracheotomy. At present, the most widely used, safe and effective method is to use plasma radiofrequency ablation system to perform low-temperature ablation on the lesion area. It can effectively solve the problem of pharyngeal obstruction, and it can also easily solve the problem of tongue root hypertrophy and other problems that have not been solved in a better way before, especially for the obstruction caused by turbinate hypertrophy, plasma is the most ideal treatment method. Surgical treatment is suitable for patients with upper airway obstruction, such as: turbinate hypertrophy, deviated nasal septum, enlarged tonsils, enlarged uvula and low hanging soft palate, etc. Surgical methods such as nasal septum correction and palatopharyngoplasty are used to solve the ventilation problem. 1.Radiofrequency ablation therapy. Suitable for patients with mild to moderate snoring, using plasma cryogenic elimination system to make the pharyngeal hypertrophic tissues decompensated and shrunken, this method is simple, traumatic, non-bleeding, and can be treated in outpatient clinic in general. 2.Transnasal positive pressure ventilation treatment. The air is pressurized through a special whistle machine, so that the patient’s airway is blown open and no longer blocked, curing the complications of oxygen deficiency of the obstructed airway. This method is non-invasive, but patients need to wear a nasal mask when sleeping, and should be under the guidance of specialized physicians, shopping and use of the whoosh machine. 3.Oral appliance treatment. A special dilator is put into the pharyngeal cavity while sleeping to expand the pharyngeal cavity and reduce the upper airway resistance. Because of the discomfort of placing the dilator in the mouth while sleeping, it is not easy for patients to accept. Conservative treatment: medication, weight loss, continuous positive pressure ventilation snoring therapy device (CPAP) and tongue support. Some people with obesity and short necks have narrower upper airways than normal people, so they are prone to snoring, and some others snore due to bad sleeping posture. In this case, the doctor will suggest him to lose weight, quit smoking and drinking, change the bad sleeping posture, or use some medicines. Usually, these people do not need surgical treatment and their snoring will disappear.