Dietary precautions when blood creatinine is elevated need to be analyzed according to the causes of creatinine elevation, and cannot be generalized. Elevated creatinine can be caused by physiological or pathological factors. Physiological factors, such as overeating a large amount of muscle, strenuous exercise, etc., cause creatinine increase, then you need to control the intake of meat food, pay attention to rest can be. Pathological factors such as various types of glomerulonephritis, urinary tract infections and other causes of renal impairment need to pay attention to low-salt, high-quality low-protein, and some patients need to pay attention to avoid the application of high-phosphorus, high-potassium food. 1. First of all, we need to pay attention to low-salt diet, daily salt intake restrictions, if there are drugs difficult to control hypertension, severe edema, salt intake needs to be less than 3 grams per day, try to eat less pickles, brined meat and other foods containing more salt. 2. High-quality low-protein diet, protein intake to lean meat, milk, eggs and other high-quality animal protein or soy protein. 3. If the creatinine is elevated more or there are patients with hyperkalemia, they need to eat as little as possible of high potassium foods, such as bananas, oranges, cherries, jujubes and so on in fruits. 4. If accompanied by hyperphosphatemia, secondary hyperparathyroidism, etc., it is necessary to minimize the consumption of foods high in phosphorus, such as various nuts and foods rich in various additives. When you find high creatinine, it is recommended that you go to the hospital in time to find out the cause and follow the doctor’s instructions to standardize the treatment and reasonable diet.