Chronic Kidney Disease staging means that it is divided into five stages according to renal function indexes such as glomerular filtration rate, blood creatinine level and endogenous creatinine clearance. 1. Stage I: Glomerular filtration rate is more than 90ml/min, when creatinine clearance is not yet affected, and the focus should be on treating the primary disease. 2. Stage 2: glomerular filtration rate is 60 to 89ml/min, the focus of prevention and treatment is to prevent cardiovascular complications and treat the primary disease. 3. Stage III: the glomerular filtration rate is 30 to 59 ml/min, and the focus of prevention and treatment is to prevent various complications. 4. Stage IV: the glomerular filtration rate decreases to 15 to 29 ml/min, and patients need to be actively treated to avoid serious complications. 5. Stage V: the glomerular filtration rate is less than 15ml/min, which is already chronic renal failure, and patients are recommended to prepare for dialysis treatment. Patients with chronic kidney disease are recommended to go to the hospital in time, cooperate with professional doctors for diagnosis and analysis, and choose appropriate treatment.