Glomerular filtration rate and blood creatinine conversion relationship is (140 – age) × body weight (kg) ÷ blood creatinine (umol/l), male × 1.23, female × 1.04 can be calculated glomerular filtration rate. Both blood creatinine and glomerular filtration rate are indicators for checking and evaluating kidney function. Glomerular filtration rate can more accurately assess the degree of glomerular damage and how good or bad the kidneys are; it is assessed by a combination of blood creatinine, body weight, age and gender. Blood creatinine is the metabolite of muscle tissue in the human body, and its elevation suggests that the glomerular filtration function has decreased and the renal function is impaired; its elevation can be physiological, such as strenuous exercise, staying up all night, and eating a large amount of meat, etc., and pathologic factors, such as acute and chronic renal failure. If there is any discomfort, it is recommended to go to a regular hospital, complete the relevant examinations as prescribed by the doctor, and carry out systematic treatment, and do not blindly treat yourself to avoid delaying the condition.