Patients with advanced stage of bowel cancer who have ascites can be treated with moderate amount of ascites pumping. If a large amount of ascites is pumped at one time, it will easily lead to hypoproteinemia, electrolyte disorder and pulmonary embolism and other problems. 1. Hypoproteinemia: Ascites treatment will easily cause a large amount of albumin loss, which will lead to hypoproteinemia. Originally, patients with advanced intestinal cancer are undernourished, plus the loss of ascites, which will make the original mild hypoproteinemia develop into severe hypoproteinemia, and lead to aggravation of ascites. 2. Electrolyte disorders: when a large amount of ascites is put into treatment, it will cause serious electrolyte disorders, which will aggravate the condition. 3. Pulmonary embolism: this is because after ascites is pumped, patients are in high coagulation state, and coagulation factors are obviously higher than normal, so patients are prone to pulmonary embolism, which may jeopardize patients’ lives in serious cases. Ascites extraction in advanced stage of intestinal cancer should decide the amount of ascites extraction according to the condition, and patients should communicate with doctors in time if they have any discomfort, and avoid carelessness, so as to avoid delaying the treatment.