Elderly abdominal fluid can be treated by restricting sodium and water intake, supplementing protein, puncture drainage, taking diuretics, etc. The most important thing is to clarify the cause of the disease and treat the original disease. 1. Limit sodium and water intake: patients with ascites must limit sodium and give salt-free or low-salt diets. Patients can produce spontaneous diuresis through the limitation of sodium and water intake, so that ascites will subside. 2. Supplementary protein: for abdominal fluid caused by hypoproteinemia, regular small amount of intravenous infusion of fresh blood or albumin several times a week will help to improve the general condition of the body, restore liver function, improve plasma osmolality, and promote the subsidence of ascites. 3. Puncture and drainage: For abdominal fluid accumulation caused by cirrhosis and other liver diseases, abdominal puncture and drainage can be carried out under color ultrasound to get rid of excessive fluid accumulation. 4. Taking diuretics: For abdominal fluid retention caused by heart failure, diuretics can be taken to help urination and reduce fluid retention, commonly used drugs are hydrochlorothiazide tablets, furosemide and so on. The important thing is to clarify the cause of abdominal fluid in the elderly, according to the cause of the active treatment of the original disease, in order to make a complete improvement in the symptoms, to avoid repeated episodes of abdominal fluid. Please follow the doctor’s instructions to standardize the treatment, do not blindly self-medication.