Five-point blood glucose usually refers to the following five times: blood glucose level in fasting state in the morning, blood glucose level two hours after breakfast, blood glucose level two hours after Chinese meal, blood glucose level two hours after dinner, and blood glucose level before going to bed. These five time points can reflect the blood glucose fluctuation of human body throughout the day, and a good measurement of blood glucose at these five time points can provide a very good basis for understanding the changes of blood glucose spectrum throughout the day, as well as giving guidance on life and making adjustments to medication regimen. If the fasting blood sugar level in the morning is elevated, but the blood sugar level two hours after three meals is normal, and the blood sugar level before bedtime is also normal, it is usually considered to be a dawn phenomenon, that is, the body has a glucagon antagonistic effect on insulin in the morning, and it is necessary to carry out relevant drug treatment for fasting hyperglycemia. If the fasting blood sugar is normal in the morning and the patient only shows an increase in blood sugar level two hours after three meals, it is necessary to consider whether it is a factor of not strictly controlling the diet and to adjust the diet. If the physical condition allows, it can be appropriately combined with post-meal exercise to help adjust the blood glucose two hours after three meals. Bedtime blood glucose monitoring is very necessary for elderly diabetic patients who are in poor physical condition, because bedtime blood glucose can help predict the possibility of nighttime hypoglycemia. If it is a low blood sugar before bedtime, you should worry about the possibility of hypoglycemia occurring at night. It is recommended to drink some milk and eat some cookies before going to bed, which are used to prevent the occurrence of hypoglycemia at night. Because once hypoglycemia occurs at night, it is usually not easily detected and can easily induce adverse events and unsafe events. For these five time points, a complete blood glucose profile needs to be monitored for diabetic patients. If the patient’s blood glucose level is smoothly and well controlled, the time points for monitoring can be gradually reduced, as well as the time period between monitoring can be lengthened. If all five points of blood glucose measurements are poor, hospitalization is recommended and blood glucose regulation under the guidance of a physician.