Sleep apnea syndrome is a common complication in patients with obesity, which refers to more than 10-second intervals between breaths during sleep, snoring and apnea alternately, sometimes apnea time can reach the ability to judge, memory loss, easy to fatigue, it is difficult to sleep deeply at night, and often snooze during the day, and finally develops into high blood pressure, pulmonary arterial hypertension, cardiac failure, hypoxemia and hypercarbia for 2-3 minutes, with episodes occurring every night Several times. In the long term, this leads to decreased sleep quality, brain hypoxia, and patient acidemia. It has been shown that the 10-year mortality rate for those with more than 20 pauses per night can reach more than 30%. The main reason for this complication is the excessive accumulation of fat in the neck, the airway is floppy, and the root of the tongue falls back, leading to snoring and apnea. Moreover, obese patients gain weight, lung wall compliance decreases, lung ventilation is insufficient, and finally hypercapnia and hypoxemia occur. Accompanied by hypertension in obese patients, the condition can be further aggravated, leading to pulmonary hypertension, cardiac failure and so on. For this complication, gastric reduction surgery is currently a good choice, and active weight reduction therapy is the basic measure for the treatment of apnea syndrome, while alcohol and sedatives should be avoided. A 10% reduction in body weight can increase oxygen saturation by 5%, and symptoms can be significantly improved. Gastric reduction surgery has been shown to be very effective in this condition, not only in reducing the patient’s weight but also in controlling the progression of the disease. Reducing the number of apneas can significantly reduce mortality. If you are already suffering from a more severe form of sleep apnea syndrome, it is important to take steps to avoid missing out on the best possible treatment.