Dietary principles for patients with chronic kidney disease mainly include low salt, low fat, high quality protein and low potassium and low phosphorus diet, and at the same time, the intake of water should be restricted. 1. Low salt: Limiting the intake of sodium can help maintain the stability of blood pressure, thus reducing the damage caused by elevated blood pressure. It is recommended that this group of people should consume no more than 3 grams of salt per day, and avoid foods with high sodium content, such as cured ham and salted duck eggs. 2. Low-fat: Limiting the intake of foods containing too much cholesterol is helpful for people with chronic kidney disease, which can reduce the possibility of atherosclerosis and maintain cardiovascular health. 3. High-quality protein: A protein-restricted diet can reduce the production of nitrogen-containing metabolites and alleviate symptoms and related complications. Patients with chronic kidney disease can consume a moderate amount of high-quality low-protein foods, such as eggs, milk and lean meat. 4. Low potassium: chronic kidney disease patients can lead to potassium metabolism disorders, hyperkalemia is easy to cause the risk of cardiac arrest, so patients with uremia should strictly limit potassium intake. Such patients should reduce the intake of potassium-rich foods, such as bananas, groundnuts, oranges and so on. 5. Low phosphorus: High phosphorus can easily lead to renal osteodystrophy and so on. Therefore, it is necessary to reduce the intake of mushrooms, nuts, animal offal and so on. 6. Restriction of water intake: such patients have fluid excretion disorder, therefore, water intake should be restricted to avoid causing edema, or even leading to acute left heart failure. Patients with chronic kidney disease are recommended to visit regular hospitals in time and standardize treatment under the guidance of doctors.