At present, the Department of Endocrinology is equipped with six insulin pumps, which have achieved very good results and summed up rich experience in the application of diabetic blood glucose control. The insulin pump is a device that is shaped and sized like a beeper and infuses insulin continuously into the body through a hose connected to the human body. It simulates the physiological mode of insulin secretion by the healthy human pancreas. It is commonly known as “artificial pancreas”. It is equipped with a reservoir for short-acting insulin, a display and some buttons for setting the pump program, and a sensitive drive motor that slowly pushes insulin from the reservoir through the infusion catheter into the subcutaneous. The infusion catheter varies in length and firmly connects the pump to the body. 1.Simulates the function of pancreatic secretion for better blood sugar control and improved HbA1c level. 2.Using short-acting insulin, small doses are continuously infused at the same site, overcoming the conventional injection method. Many people choose the abdomen as the insulin administration site, which is easy to operate and has stable insulin absorption, as well as the buttocks, outer thighs and the deltoid muscle of the arm. An insulin pump consists of an insulin-filled reservoir (similar to a conventional syringe), a small battery that drives the pump, and a computer chip that allows the user to accurately adjust the amount of insulin infused, all contained in a pager-sized plastic box. The reservoir infuses insulin into the body through a thin plastic tube called an “infusion line. The infusion line is 61cm or 107cm long and has a steel or soft needle at the end from which insulin is injected into the body.