The importance of sleep for human beings is self-evident, almost 1/3 of human life is spent in sleep, and sleep disorders have always accompanied human beings. The increasing social competition, which makes people’s life and work pace accelerating, as well as the change of living habits and other factors, make the incidence of sleep disorders increasing. Obstructive sleep apnea hypoventilation syndrome is the most common clinical sleep disorder, and its incidence is also increasing and getting more and more attention. Obstructive sleep apnea hypoventilation syndrome is a group of signs and symptoms that occur when patients have frequent obstruction of the upper airway during sleep. The high incidence of OSAHS seriously affects patients’ daily life and work, and poses a potential threat to patients’ life. Upper airway obstruction is the direct cause of OSAHS, and the key to treatment is to accurately identify the site of obstruction and fully release the obstruction. In recent years, preoperative evaluation of patients with OSAHS has been performed using a variety of imaging modalities that allow for more precise identification of the site of upper airway obstruction. A combination of surgical and non-surgical methods has been used for treatment, and good clinical results have been achieved. For patients with OSAHS who have a narrow hypopharyngeal cavity due to underdeveloped mandible and enlarged tongue and tongue root, the airway has been enlarged by using a snore stopper with a snoring device. For patients with multi-part obstruction of the palatopharyngeal airway, oropharyngeal airway and hypopharyngeal airway, a combination of multiple procedures is used to remove the airway obstruction factors in a targeted manner and expand the airway space.