The normal value of blood creatinine is 53~106umol/L for men and 44~97umol/L for women. High blood creatinine can be caused by physiological and pathological factors, and there are some differences in dietary precautions. Physiological factors need to reduce the intake of meat food, and pathological factors need to reduce salt, low fat, high quality and low protein diet. 1. Physiological factors: after consuming a large amount of meat, the blood creatinine may increase, in which case the intake of meat should be reduced. 2. Pathological factors: seen in chronic nephritis, chronic kidney disease, etc., patients need to low-salt, low-fat, high-quality low-protein diet. Specifically, eat less salty food, eat less kimchi, eat less fatty foods such as fatty meat, peanuts, limit the total amount of protein to eggs, milk, lean meat and other high-quality protein. When you find that your blood creatinine is slightly high, the first thing you need to do is to find out the cause. It is recommended to go to the hospital to find out the cause, under the guidance of professional physicians to develop a diet and medication program, and so on.