A ventilator does not cure sleep apnea. Respirator treatment is like wearing glasses for myopic eyes, it is only an auxiliary therapeutic device. The continuous positive pressure in the airway after continuous wearing during sleep can hold open the collapsed area of the upper airway soft tissues, keep the upper airway open, no more snoring and breath-holding during sleep, no more apnea and other phenomena, but it needs to be worn for life, not worn for a period of time can be cured. However, some patients who have been snoring for a long time will have edema in the pharyngeal cavity and may have more severe sleep apnea. After wearing the ventilator for a period of time and occasionally not wearing it, the symptoms will be reduced than before treatment. There are also some patients, after wearing the ventilator daytime mental state became better, more willing to exercise more, diet regulation, pay attention to weight loss, may wear a period of time, weight loss to normal or even low, and finally reach the phenomenon of complete cure also have.