To effectively and thoroughly treat chronic renal failure, the necessary medication is essential. During the treatment of chronic renal failure disease, patients need to promptly replenish blood volume, increase appropriate cardiac output, restore renal perfusion and glomerular filtration rate in patients, remove obstructions in the renal tubules, effectively prevent and control infections, and try to prevent DIC and renal parenchymal damage caused by renal ischemia. However, if the body has some extra burden, such as insufficient blood volume, infection and urinary tract obstruction, or the use of nephrotoxic drugs, the patient is likely to develop renal failure very quickly or even have obvious symptoms of uremia. If the additional burden is corrected, the patient’s symptoms may be reversed. Chronic renal failure disease is generally very prone to recurrence (mainly local recurrence or metastasis of cancer) due to its own characteristics, which requires chronic renal failure patients to pay attention to a certain degree of care after surgical treatment. Chronic renal failure patients should pay attention to eating more vegetables and fruits rich in dietary fiber, such as spinach, rape, cabbage, celery and leeks. To effectively prevent hyperkalemia, chronic renal failure patients should strictly limit their daily potassium intake to less than 2 g. It is best to eat foods that are high in potassium, and to remove potassium from foods that are high in potassium through cooking, such as potatoes that can be soaked in water before eating, and vegetables that can be boiled in water before eating. For example, potatoes can be soaked in water and then eaten, vegetables can be cooked in water and then eaten, and fruits can be boiled with sugar and then eaten, and then the pulp can be eaten.