An easy way to measure blood glucose is to use a blood glucose meter to measure fingertip blood glucose, which is simple and convenient and can be done at home, but the use of the meter needs to be instructed by a professional doctor. Fingertip blood glucose is a blood glucose meter used to measure blood glucose at the end of the finger. The general procedure is to sterilize the skin of the fingertip with 75% alcohol, wait for the sterilized liquid to evaporate and dry, then pierce the finger with a blood needle, wipe off the first drop of blood with a cotton swab, and then take blood to measure blood glucose. Fingertip blood glucose measurements are often needed, including fasting blood glucose and 2-hour postprandial blood glucose. The normal value of fasting blood glucose is 3.9-6.1 mmol/L, and the normal value of 2-hour postprandial blood glucose is <7.8 mmol/L. Fingertip blood glucose is commonly used for daily blood glucose monitoring. If there is an abnormality in fingertip blood glucose, you should go to the hospital to have blood drawn from a vein, have blood glucose drawn from the vein, and have your blood glucose treated under a doctor's guidance.