Chronic renal failure review needs to improve blood routine, renal function, parathyroid hormone, electrolytes and other tests. Chronic renal failure is a chronic kidney disease caused by various reasons of renal metabolic dysfunction, internal environmental disorders and imbalance. When renal function is low, erythropoietin will be reduced, and uremic toxins will affect the microenvironment of bone marrow, which in turn triggers renal anemia. Review and improve the routine blood test can understand the anemia. Improvement of renal function test can understand the progress of renal function, blood creatinine and urea nitrogen can reflect the situation of renal function. Chronic renal failure patients due to hypocalcemia, hyperphosphatemia, active vitamin D deficiency and so on can cause secondary hyperparathyroidism, at this time need to improve the parathyroid hormone examination, clarify the condition. Renal failure patients, electrolyte metabolism disorders, improve electrolyte examination, can understand whether the patient has hyperphosphatemia, hyperkalemia, hyponatremia, acidosis and other conditions. The review of chronic renal failure patients is recommended to regular hospitals, follow the doctor’s instructions to standardize the examination and treatment.