There is no exact diet that can prevent uremia. Chronic kidney disease diet should pay attention to the principles of ensuring sufficient calories, low quality protein diet, low salt diet, low phosphorus diet, low potassium diet and water control. Calculate the daily calorie requirement, equal to the ideal body weight multiplied by 30-35 kcal/kg. high quality protein is the mainstay in the early stage of chronic kidney disease, accounting for more than 50% of total protein, after stage III protein intake is controlled at 0.6-0.8/(kg.d), and non-high quality protein in food is restricted. High-quality protein refers to animal protein, such as meat, eggs, fish and milk. Plant proteins are only black beans, soybeans and green beans, which are rich in essential amino acids, have better utilization than other proteins and produce less metabolic waste. Most vegetable proteins are non-high quality proteins, such as rice, noodles, mung beans, red beans and other legumes. Low-salt diet, salt intake should be between 3-6g per day, including chicken essence, MSG, soy sauce in salt. Low phosphorus diet, high phosphorus will appear itchy skin, bone pain, convulsions, high phosphorus diet including a variety of legume products, nuts, seeds, spices, mushrooms. Life can be boiled eggs to remove the yolk and eat the egg white; boiled meat, discard the broth to eat meat; avoid the intake of processed foods, such as food additives, drinks, preservatives, etc. Low potassium diet, high potassium will appear abnormal sensation, muscle weakness, cardiac arrest, foods high in potassium include bananas, oranges and other kinds of fruits, spinach and other kinds of fresh vegetables, tea, kelp, pomfret, etc. In addition, the causes of chronic renal failure are different, and the specific causes need to be analyzed specifically, and cannot be generalized.