The kidneys are the sewer of the body, when the kidneys are diseased, the body’s ability to remove some substances decreases, and the removal of very important substances such as sodium (salt) decreases, which can lead to increased blood pressure and edema in patients. So it is very important to control the amount of intake. Patients with kidney disease are often combined with some metabolic disorders, such as abnormal amino acid composition, abnormal glucose tolerance, which requires adjustments in the structure and amount of the diet. Patients with chronic kidney disease often have altered palates and their food preferences may change, requiring reasonable skills to adjust to maintain a high quality of life. Patients with chronic kidney disease are often malnourished due to co-infections, inflammation, and cardiovascular disease, so they need proper nutrition and diet management. Studies have shown that a high protein diet can increase renal blood flow and perfusion pressure and worsen kidney damage. A lower protein diet can slow down the progression of kidney disease. After kidney damage, the accumulation of substances in the body or substances produced by abnormal metabolism itself has a great impact on the progression of kidney disease, such as uric acid can cause kidney damage, and increased blood pressure can aggravate kidney damage, reducing the accumulation of these substances requires dietary control and management of patients. Dietary control for patients with chronic kidney disease is a necessary but also a very difficult task. It is difficult to change a long-established lifestyle, but without change the disease will only get worse and the quality of life will also get worse. If you change your lifestyle, the progress of the disease may be controlled, and the adjustment of lifestyle is an adaptation process.