Blood glucose meters need to be used by following the steps in sequence, which mainly include turning on the meter, checking or adjusting the code, preparing the blood collection site, collecting blood, taking and recording the reading, and turning off the meter. Different manufacturers and models of blood glucose meters may have different methods of use. 1. Power on: The blood glucose meter can be turned on automatically when the bar code end of the test strip is inserted into the socket. 2. Check or adjust the code: Adjust the blood glucose meter test code and the code on the blood glucose test strip bottle to be consistent through the forward and backward buttons of the meter. 3. Blood collection site preparation: Clean and sterilize the blood collection site with medical alcohol. 4. Blood collection: Collect the appropriate amount of blood with a blood collection needle, drop it on the blood glucose test paper, and use a dry cotton swab to press the bleeding place to stop bleeding. 5. Read and record: Usually, after a few seconds of blood collection, the blood glucose meter will display a number on the screen, which is the blood glucose value. 6. Turn off the meter: The meter will automatically turn off after the glucose test strips are removed. You can consult your doctor for specific ways to use the blood glucose meter.