Dietary precautions for chronic renal failure include limiting salt intake, low protein diet, supplementing folic acid and vitamins. 1. Limit salt intake: according to edema and blood pressure, patients with chronic renal failure need to strictly limit the intake of sodium. 2. Low-protein diet: Most of the patients with renal failure have low albumin, so they need to pay attention to supplementing the diet with high-quality protein, too much will increase the burden on the kidneys, aggravate the symptoms or complications, etc. It is recommended to take eggs, lean meat, milk and so on. 3. Supplementary folic acid and vitamins: chronic renal failure patients are prone to high phosphorus, high potassium and other electrolyte disorders, appropriate supplementation of folic acid and vitamins can control the intake of potassium and phosphorus. Chronic renal failure patients are advised to go to regular hospitals, follow the doctor’s instructions for standardized treatment, if necessary, consult a specialist nutritionist, nephrologist specific dietary considerations.