The following methods can reduce the intra-abdominal pressure: gastrointestinal decompression, laxative, laparotomy, and open heart surgery. 1. Gastrointestinal decompression: a gastric tube is inserted through the nostril, which can suction out the fluids in the gastrointestinal tract, thus reducing the pressure in the gastrointestinal tract and abdominal cavity. 2. Laxative: Oral medication with laxative effect or enema from the anus can induce excretion of gastrointestinal contents, which can reduce the pressure in the abdominal cavity. 3. Laparotomy: If there is a large amount of fluid in the abdominal cavity, it will cause the pressure in the abdominal cavity to rise, at this time, it is feasible to perform laparotomy, which can drain the fluid, thus making the pressure in the abdominal cavity decrease. 4. Surgical treatment: it means making a surgical incision in the abdomen to keep the abdominal cavity open, and then applying aseptic dressings externally, which can make the pressure in the abdominal cavity decrease. All of the above methods can be used, and it is necessary to evaluate the patient’s condition and then choose the appropriate method.