In the clinical sleep apnea is called paroxysmal sleep apnea syndrome, most patients are due to obesity, rhinitis, nasal polyps, tonsillar hypertrophy and other underlying diseases. Common causes are: first, inflammation of the respiratory tract, because the inflammation of the respiratory tract leads to inflammation of the tonsils or inflammation of the throat, tonsils and throat and other parts of the body will become hypertrophic, in sleep will easily cause apnea. Second, rhinitis, nasal polyps and other diseases, will affect the nose inhalation and exhalation. Third, poor diet, long-term drinking and smoking can also affect the throat, thus causing apnea. Fourth, abnormal heart and lung function, with chest tightness, panic, chest pain and other symptoms, may also lead to apnea.