Normal urine does not contain glucose and the glucose result should be negative. The renal glucose threshold in normal human kidneys is 10mmol/L. If the glucose in the blood does not exceed 10mmol/L, the urine is negative for all glucose. Once the glucose in the blood exceeds 10mmol/l, the excess glucose will be excreted out of the body through the urine and a positive urine glucose will be found in the urinalysis. The amount of glucose contained in the urine is measured with a urine glucose test strip, which reflects the amount of glucose contained in the urine by the change in color. Although this method is convenient and quick, it does not reflect the actual value of blood sugar. Only the measurement of intravenous or fingertip glucose can truly reflect the specific value of blood sugar at that time and guide the treatment later.