Protein should be calculated based on the relevant indicators of the patient’s kidney disease and the stage, the daily protein intake per kilogram of body weight is 0.3-0.8g, and the daily energy intake per kilogram of body weight is about 35kCal. e.g. a male patient, 175cm in height, 80kg in weight, 40 years old is in the stage of chronic renal insufficiency, calculate the standard weight with 175-105, equal to 70kg, multiply by Energy factor 35, the daily energy intake requirement is 2400-2500kCal, protein with standard weight 70 multiplied by factor 0.8, equal to 56g, of which more than 60%, that is, about 34g of protein, are required to be provided by high quality protein, such as lean meat, milk, eggs, etc.