Chronic glomerulonephritis is mainly staged according to the patient’s renal function level, the higher the stage, the more serious the disease. Clinically, patients should develop the appropriate treatment plan according to the stage of the disease under the guidance of a doctor. The specific stages of chronic glomerulonephritis are as follows: 1. Stage I: endogenous creatinine clearance of 90 ml/min or more; 2. Stage II: endogenous creatinine clearance of 60-89 ml/min; 3. Stage III: endogenous creatinine clearance of 30-59 ml/min; 4. Stage IV: endogenous creatinine clearance of 15-29 ml/min; 5. Stage V: endogenous creatinine clearance was less than 15 ml/min.