A protein-restricted diet is an important part of the treatment of CKD, especially chronic renal failure. In 2010, the American Society of Nephrology introduced the recommended nutritional requirements for CKD, and in China, it is recommended that kidney patients should switch to a low protein diet, especially after stage 3 CKD. One of the important mechanisms that cause the continuous development of chronic kidney disease is the “three highs”, i.e. high filtration, high perfusion and high stress, and a low protein diet can also reduce the “three highs” and slow down the progression of kidney disease. However, a low-protein diet does not mean that protein cannot be consumed, but it should ensure that the protein intake is appropriate and does not cause malnutrition, and does not put too much burden on the kidneys, but should be lower than the normal intake standard. Protein intake should be determined according to age, gender, weight, height, kidney function and the physiological and pathological state of the body. So what are the protein requirements for chronic kidney disease diet? 1, meat (animal protein) patients with renal failure, protein intake should be limited. Because it can be metabolized in the body to produce some nitrogenous waste and excreted through the kidneys with urine. This is not not to eat meat, but on the contrary, meat, eggs and milk contain high physiological value protein (representing the high degree of protein absorption and utilization by the body), which must be taken in. Animal protein contains more essential amino acids and is highly bioavailable. As long as the daily intake does not exceed the recommended amount, it is fine. Vegetarian foods contain vegetable proteins, which are not high-value proteins, and consuming too much of them will produce too much nitrogenous waste, which will increase the burden on the kidneys. 2, eggs Eggs contain protein is the most complete protein our body needs, the fat, iron, calcium, but also easy to be absorbed and used by the body. Eggs are rich in vitamin A, vitamin B2, vitamin B1, etc., all of which are trace elements that our bodies urgently need and are easily deficient. Eggs have a role in the prevention of atherosclerosis and cancer. The protein in eggs can repair damaged livers and lecithin can promote the regeneration of liver cells. 3, milk Milk is a high-quality protein food (8g/250mg); milk is a good source of calcium (260mg/250g); milk has a moderate phosphorus content (183mg/250g). 4, soybean products The traditional concept that soybean products for plant protein can not be eaten, plant protein biopotency is low, containing more non-essential amino acids, the intake of nitrogenous substances easily lead to increased production and excretion, increasing the burden on the kidneys. However, recent studies have shown that soy protein is a high biovalent complete protein, with a digestibility and absorption rate of 84%-98%, and compared to animal protein, soy protein has no significant effect on renal blood flow and GFR. In addition to antioxidant, hypolipidemic and hypotensive active peptide effects.