What is the superiority of insulin pumps over the traditional method of subcutaneous insulin injections multiple times a day in controlling blood sugar, also for insulin injections? The superiority of insulin pump is mainly reflected in two aspects. The first aspect is the superiority of the infusion method. The insulin secreted by a normal person every day is divided into two parts. One part is called basal insulin, which is the insulin secreted to maintain normal blood sugar without eating. The sensitivity of insulin is different in normal people at different times of the day, so the secretion of basal insulin is also different at different times of the day, for example, the secretion is less at night and more in the early morning. Another part is called mealtime insulin, which is the insulin secreted to control the high blood sugar caused by meals, and the secretion time and amount of secretion will change accordingly with the meal time and meal quantity. This is the physiological characteristics of normal human insulin secretion. The insulin pump simulates this physiological secretion characteristic and divides the daily insulin required by diabetic patients into two parts, basal insulin and mealtime insulin, for injection. For example, the basal rate can be lowered at night to prevent hypoglycemia at night, and the basal rate can be raised in the early morning to control high blood sugar at dawn and early morning, so that blood sugar can be controlled more smoothly. At the same time, under the premise of healthy and reasonable diet, patients can appropriately eat earlier or later, or eat more or less, and the mealtime high dose can be appropriately adjusted according to the time and meal quantity of patients, which increases the freedom of patients’ life and improves their quality of life. In traditional subcutaneous insulin injection several times a day, the time of insulin onset, peak effect and duration of effect are basically fixed and cannot be changed according to the physiological needs of patients, so blood glucose is prone to fluctuations, often requiring patients to fix meal time and meal quantity to match the effect of insulin, which reduces the quality of life and blood glucose is not necessarily under ideal control. The second aspect is the superiority of infusion accuracy. In traditional subcutaneous insulin injection several times a day, the infusion accuracy can only reach 1 unit. Insulin pump can reach 0.05 units of infusion accuracy, which is 20 times better than the traditional infusion accuracy. For those patients who have low blood sugar when adding 1 unit and high blood sugar when subtracting 1 unit, the insulin pump can control blood sugar more smoothly by adding or subtracting 0.1 or even 0.05 unit and reduce the drastic shock of blood sugar.