Chronic renal failure dialysis indications: 1, generalized swelling, heart failure can not be relieved. 2.Blood potassium >6.5mmol/L. 3.Blood creatinine ≥707.2umol/L, or blood urea nitrogen ≥28.56mmol/L. 4.Metabolic acidosis. 5, the presence of anemia, pericarditis, gastrointestinal bleeding and other serious complications. Anyone who meets the above two requirements can be considered for dialysis. However, the patient’s primary disease, clinical condition, degree of anemia, cardiac function status and urine output should be taken into consideration to determine. In recent years, the prevalence of diabetes has increased significantly, and diabetic nephropathy has become one of the main diseases of dialysis. Patients with diabetic nephropathy often have significant edema, low food intake, heart failure, pleural fluid, ascites and other conditions in the later stages, and the indicators of dialysis should be relaxed appropriately.