Some diabetic patients have fear of insulin injection and believe that once they use insulin, they will become addicted, which is a very wrong understanding. Insulin is like a key that opens the door for glucose to enter the cells, and only the glucose that enters the cells can power the cells and give the body its normal various physiological functions. First of all, insulin is the only glucose-lowering hormone that exists in the human body itself. Insulin is injected by diabetic patients and used to control high blood sugar; when insulin injections are discontinued, the patient will not show withdrawal performance even if there is another rise in blood sugar. Insulin is a different mechanism from certain drugs that can create dependence (e.g., drugs). Secondly, insulin injection is also a treatment for lowering blood glucose, and the need for continuous injection or short-term application is determined by changes in the condition, rather than being set in stone. For example, in type 1 diabetes, due to the absolute lack of insulin in the body, the supplementation of exogenous insulin is not only to control blood sugar, but also to maintain life, not “dependence”, but need. Some patients with type 2 diabetes also need insulin therapy at some stage.