I. Definition and working principle of insulin pump The insulin pump is a kind of artificial intelligent device for continuous subcutaneous insulin infusion, such as BB machine, with built-in computer chip controller, through a small hose, the insulin in the pump is continuously infused into the abdomen and other parts of the diabetic patient subcutaneously 24 hours a day, just like the normal human pancreas secretes insulin, simulating the secretion of basic insulin in the body; at the same time, during meals, the premeal insulin and infusion mode are set according to the type and total amount of food to control the post-meal blood glucose. The insulin pump is also called “artificial pancreas” because it sets the pre-meal insulin and infusion pattern according to the type of food and total amount to control the post-meal blood sugar, thus keeping the blood sugar at normal level for 24 hours. What are the advantages of insulin pump over multiple daily insulin injections? 1. Better and smoother blood glucose control, thus greatly reducing or delaying the occurrence and development of long-term chronic complications of diabetes, improving quality of life and extending life expectancy; 2. Lifestyle, so that you eat and sleep more freely, reducing the restrictions of diet and lifestyle; 5. During the surgical perioperative period, it can rapidly and smoothly lower blood sugar, reduce the risk of surgery, shorten the hospitalization time and reduce hospitalization costs.