Patients with renal failure need to pay attention to the following points in their diet: First, the most important thing for patients with renal failure is a low-salt diet, with daily salt intake controlled at less than 6 grams, or less than 3 grams if they have hypertension or edema that is difficult to control with medication, and usually pay attention to eating less salted vegetables, curd, instant noodles and various snacks containing salt. Second, if the patient has not yet dialysis, need to carry out a high-quality low-protein diet, along with compounded alpha-keto acid supplementation of essential amino acids, daily protein intake to maintain between 0.6-0.8 grams per kilogram of body weight, with high-quality protein, such as a variety of lean meat, milk, eggs, etc., eating too much protein may aggravate kidney damage. Third, control the intake of water, to maintain a balance of intake and output. Fourth, eat less food with high phosphorus and potassium.