Abdominal fluid accumulation in the elderly may be caused by liver disease, cardiovascular disease, peritoneal lesions, renal disease, and it is recommended to consult a doctor in time. 1. Liver diseases: such as cirrhosis, primary liver cancer, etc., patients may also be accompanied by loss of appetite, nausea, abdominal distension, emaciation, fatigue, jaundice, mucous membrane petechiae, spider nevus, liver palms and other symptoms. 2. Cardiovascular diseases: such as chronic congestive right heart failure, portal vein thrombosis, etc., the patient can be triggered by the obstruction of venous return and ascites symptoms. 3. Peritoneal lesions: such as peritoneal metastases, primary mesothelioma, peritonitis, etc., patients may also be accompanied by abdominal pain, nausea, vomiting, anorexia and other symptoms. 4. Kidney disease: such as chronic nephritis, nephrotic syndrome, etc., patients may also be accompanied by proteinuria, eyelid edema, lower limb edema, hyperlipidemia, hypoproteinemia and other symptoms. 5. Others: such as mucous edema, systemic lupus erythematosus, etc., some patients may also be accompanied by ascites symptoms. Elderly people with abdominal fluid, should seek medical attention in a timely manner, under the guidance of the doctor to identify the cause of the disease, if necessary, follow the doctor’s instructions for appropriate treatment.