The five-year survival rate of abdominal fluid in breast cancer is 20%~30% after treatment, which should be analyzed with the condition. Breast cancer is a malignant tumor that occurs in women. With the development of the disease, when there is severe malnutrition and abdominal metastasis in the advanced stage, it can lead to the production of abdominal fluid. At this time, it is often accompanied by abdominal distension, abdominal pain, nausea and vomiting. In this period, radiotherapy, chemotherapy, targeted therapy and other methods can be used to treat the cause of the disease; intravenous infusion of albumin, furosemide, hydrochlorothiazide and other diuretics, abdominal puncture to extract ascites and other methods can be used to treat the symptoms. In addition, breast cancer abdominal fluid may be caused by other etiologies, such as hypoproteinemia and cirrhosis of the liver. After active treatment, a five-year survival rate of about 20% to 30% can be obtained. Drugs need to be applied under the guidance of a doctor.