The management of malignant ascites can be problematic for physicians and patients. The mass effect of ascites can cause symptoms of painful abdominal distention, nausea, vomiting, and bowel obstruction. Also patients often complain of shortness of breath and lower extremity edema. These symptoms not only are distressing, but also adversely affect quality of life in terminal cancer patients. We will introduce you how to treat ascites based on our cases.