Diabetics who want to monitor their blood glucose should do so for 1 consecutive day. Select several time points: such as fasting blood glucose in the morning; then after eating, that is, from the first bite of food into the beginning of 2 hours after the blood glucose; to the second meal, you can measure the blood glucose again before the meal, 2 hours after the meal and then measure the blood glucose; dinner is the same as the Chinese meal, but also the blood glucose before the meal and the blood glucose 2 hours after the meal; before going to bed, to see whether the blood glucose has dropped to normal, and also the blood glucose before bedtime; if the patient’s blood glucose fluctuation is relatively large If the patient’s blood sugar fluctuates greatly, it is also necessary to monitor the early morning, such as 1:00 or 3:00 blood sugar.