High creatinine often means kidney damage, suggesting the emergence of renal insufficiency or renal failure, for patients with high creatinine avoid food with high protein, high potassium food and high purine food, can be prevented as much as possible through diet to prevent the rise of creatinine level. The elevated blood creatinine suggests renal insufficiency, chronic kidney disease is divided into 5 stages, it is recommended to clarify the stages, the diet of each stage will also be different. 1, high protein class: high protein food mainly eggs, milk, meat, soy products, etc.. If the blood creatinine is significantly elevated and there is no dialysis, a high quality low protein diet is needed. Avoiding large amounts of protein can control the continuous deterioration of kidney function and slow down the progress of kidney disease. 2, high potassium and high sodium foods: In patients with renal insufficiency, the kidney’s ability to excrete potassium decreases, which makes it easy to develop hyperkalemia and also easy to cause edema due to water and sodium retention. Therefore, it is necessary to limit the intake of high potassium foods, such as oranges, bananas, dates, cherries and other fruits, vegetables to avoid eating potatoes, fungus and other foods; also need to limit high sodium foods, such as pickles, bacon, ham and other salty foods. 3, high purine class: high purine foods are seafood, animal offal, beer, soup, etc. Patients with high creatinine are prone to hyperuricemia because the kidneys’ ability to excrete uric acid is reduced. Eating purine foods will aggravate hyperuricemia and increase the burden on the kidneys, so the intake of such foods needs to be reduced. In general, the foods to be avoided by patients with high creatinine need to be decided individually, taking into account the degree of kidney damage, comorbidities and complications of the patient.