Acute renal failure is divided into three major categories, each with different medications. First, prerenal acute renal failure, which is mainly caused by insufficient blood volume or lower blood pressure, usually requires the application of saline and sugar water rehydration, and if necessary, human albumin to increase colloid osmotic pressure and maintain effective blood volume. If the decrease in blood pressure is obvious, in the case of replenishing blood volume, dopamine and other antihypertensive drugs can be given. Second, renal acute renal failure, for renal acute renal failure is divided into three small areas: 1, acute glomerulonephritis requires the application of hormones and immunosuppressants, combined with blood purification therapy, the more commonly used hormones are methylprednisolone and prednisone, more commonly used immunosuppressants are cyclophosphamide; 2, acute interstitial nephritis is mainly due to allergies, the general application of calcium gluconate, loratadine Acute tubular necrosis is mainly caused by sensitivity to certain drugs, such as aminoglycoside antibiotics, causing necrotic manifestations of the tubules, and the clinical application of diuretics such as furosemide or torasemide, in addition to rehydration therapy with sugar or saline. Third, post-renal acute renal failure, for this cause of acute renal failure, the application of drugs does not work, need to give surgery and other treatment.