Chronic renal failure stage V is already end-stage renal disease, and the main dietary requirements include: limiting protein intake, limiting salt, low-fat, ensuring sufficient calorie intake, and supplementing vitamins and other nutrients in moderation. 1. Limit the total amount of protein: protein-restricted diet is an important part of treatment, which can reduce the production of nitrogen-containing metabolites and alleviate symptoms and related complications. For dialysis patients, the recommended protein intake is 1~1.2 grams per kilogram of body weight per day, and it should be ensured that more than half of the protein intake is high-quality protein (e.g. eggs, fish, milk, lean meat, etc.). 2. Limit salt, low-fat: eat less salty dishes, pickles, etc., and eat less fatty foods such as fatty meat. In addition to this, it is also necessary to consume enough calories, pay attention to supplementing vitamins and nutrients such as folic acid, and also need to pay attention to controlling the intake of potassium and phosphorus. Patients with chronic renal failure stage V should go to the hospital in time, and make diet and medication plan under the guidance of professional physicians.