It is normal for obesity to cause elevation of the diaphragm, but it is important to note that obesity may also affect cardiopulmonary function, which can easily lead to atherosclerosis, fatty liver and other diseases. The accumulation of abdominal fat in obese people, abdominal pressure rises, thus elevating the diaphragm, which will limit the respiratory function of the lungs, resulting in hypoxia. At the same time obese patients cervicopharyngeal and airway next to the soft tissue fat accumulation, airway and chest muscle compliance during the day can be compensated for the increased compliance of the chest muscles at night, chest muscle compliance decreased, the central obesity abdominal pressure increases resulting in diaphragm rise ventilation decreased. Normally, patients with mild or asymptomatic symptoms should be followed up and observed in a timely manner, and patients with severe or life-threatening symptoms should be treated with surgery in a timely manner. There are many surgical methods, such as diaphragm stacked tile suture, diaphragm horizontal mattress suture, diaphragm overlap suture. The principle is to restore the normal anatomical position and tension of the diaphragm, to maintain normal lung capacity and ventilation, and to treat complications by surgery. Rising diaphragm may also be due to other causes, it is recommended to go to the hospital in time, thoroughly check the cause of the disease and give targeted treatment.