The treatment of chronic renal failure primarily requires a clear understanding of the cause, and treatment targeting the cause is essential to slow the progression of chronic renal failure. The most common causes of chronic renal failure are diabetes, hypertension, and chronic nephritis. Therefore, for patients with chronic renal failure caused by diabetes, insulin is often needed to control blood sugar. For patients with hypertensive kidney disease, antihypertensive drugs are certainly necessary to control blood pressure. However, in the early stages of renal failure, ACE inhibitors or ARBs are the preferred choices. For patients with chronic nephritis in the early stages, corticosteroid medications are required for treatment. However, if the serum creatinine has already exceeded 256 micromoles per liter, treatment then focuses mainly on managing complications, and corticosteroids are no longer used. (Please use medications under the guidance of a doctor.)