Ventilators can be divided into single level and dual level. The price of a single level imported machine is around 7,000-9,000 RMB, if it is a dual level machine it often costs 20,000-30,000 RMB, if it is a domestic machine, the overall price is about 1,000-2,000 RMB than the imported one. More and more people are suffering from sleep apnea syndrome, and after diagnosis, some are not suitable for surgery to solve the problem. Some patients, due to obesity, or other diseases of the organism, can consider wearing a ventilator to improve the quality of sleep and the quality of life of the patient. In the process of embryonic ventilator, patients must actively wear treatment of primary diseases, for example, if the patient has rhinitis or tonsillitis, must be actively treated, but also pay attention to weight, and the patient is best to quit smoking and alcohol, which are conducive to the recovery of the disease.