In clinical practice, self-monitoring of blood glucose is an important part of diabetes management, an important measure to guide the safe attainment of blood glucose control, and an important basis for diabetes treatment attainment, and the rate of long-term blood glucose control attainment is closely related to the frequency of self-monitoring. The results of the Daqing Diabetes Prevention Prospective Knee Study show that intensive intervention based on blood glucose monitoring, with diet control and increased physical activity and necessary medication as the main components, can reduce the risk of diabetes by less than 42%. Self-monitoring of blood glucose can be said to save a lot of money for a small amount of money. The survey of the American Diabetes Association shows that the per capita medical expenditure of diabetic patients is four times that of non-diabetic patients, and at the same time, among diabetic patients, the per capita medical expenditure of patients with complications is four times that of patients without complications. Among urban residents in China, the direct medical cost of a diabetic patient without complications is $3,157/year, but the figure rises to $11,858/year when complications develop. In the United States, as the penetration rate of blood glucose meters exceeds 90%, the number of weekly monitoring reaches more than 7 times, which improves the rate of blood glucose control compliance and effectively reduces the occurrence of complications.