The poor dietary demand of kidney is related to different stages of kidney disease. In the early stage of kidney disease, hematuria and proteinuria are positive, or edema and hypertension occur, so our dietary requirements at this time are based on the principle of low salt, low fat, high quality and low protein. The salt content is no more than 6 grams per day, and greasy and fried foods cannot be eaten. The intake of protein is mainly high-quality protein such as meat, eggs and milk, and the amount of protein should be controlled at the same time. When creatinine and urea increase in the middle and late stage of nephropathy, then our diet needs a low-potassium and low-phosphorus diet. Oranges, bananas, canned food, instant noodles, pickled food, seafood, etc. are high in potassium and phosphorus, so it is necessary to limit their consumption.