The more common devices for measuring blood glucose are home blood glucose tester and automatic biochemistry device. Automatic biochemistry device is more accurate in detecting blood glucose, but home blood glucose tester is more convenient and quicker in detecting blood glucose. Therefore, there is no such thing as the “best” blood glucose testing device, please follow your doctor’s advice and choose according to your specific situation. Venous blood glucose testing relies on fully automated biochemical instruments, which require higher blood samples, collection of venous blood, and a longer period of time from the start of the test to obtaining the results. However, this method of blood glucose monitoring is more accurate and is suitable for the diagnosis of diabetes mellitus. The home blood glucose meter is more convenient for blood glucose testing, and the process from sampling to obtaining the results is more rapid, which is suitable for diabetic patients’ daily blood glucose monitoring. Patients who need to use a glucose meter for blood glucose measurement should follow their doctor’s advice and choose one according to their specific situation.