How to eat is a very important issue for kidney disease patients, especially protein intake. Doctors often tell patients to pay attention to eating high quality protein. So what is high quality protein? High quality protein refers to those proteins with high content of essential amino acids, less nitrogenous substances produced after metabolism in the body, higher bioavailability and higher nutritional value, including animal and vegetable high quality proteins. Animal quality proteins such as various lean meats, milk, eggs, etc., and plant quality proteins such as soybean products. In addition to being rich in essential amino acids, soy products are also rich in unsaturated fatty acids, and the cholesterol content and phosphorus content are relatively low. Eating these high quality proteins can reduce the excretion of protein urine in kidney disease patients and reduce the old high filtration state of the glomerulus, thus reducing the damage of kidney disease.