Patients with bad kidneys should have a light, easy-to-digest diet and avoid spicy foods. Measures taken are as follows: 1, low salt diet, the general requirement of sodium intake is 2-3g per day. if there is severe edema and hypertension, should be properly controlled within 2g, and to reduce the intake of pickled products as much as possible; 2, high quality protein diet, the daily protein intake at about 0.8g. If the amount of urinary protein loss is high, the amount can be increased appropriately, mainly eggs, dairy products, lean meat and fish, with the aim of delaying glomerulosclerosis. At the same time, the intake of protein should be reduced in the intake of vegetable protein, such as beans and their products; 3. Drink the right amount of water, according to the urine volume, blood pressure and edema to develop the daily water intake. It is not easy to have too much, but not to be dehydrated; 4. The diet should be rich in vitamins and trace elements, and eat more fresh fruits and vegetables. If there is hyperkalemia and high blood phosphorus, the intake of potassium-containing foods and phosphorus-containing foods should be restricted; 5. The fat content should be restricted to prevent further aggravation of atherosclerosis, mainly vegetable oils, such as canola oil, corn oil and olive oil, etc.