Insulin is an important method for diabetic patients to control blood sugar, and the use of insulin must be under the guidance of a doctor to choose a suitable treatment plan. The correct use of insulin for diabetic patients must do the following: 1. Do a good job of disinfection of the injection site, using 75% alcohol disinfection, not iodophor or iodine disinfection. After disinfection, you must wait for the alcohol to evaporate before injection to avoid aggravating the irritation. 2. Pay attention to the rotation of injection sites to avoid repeated injections at the same site. 3. Learn to accurately extract the injection dose of insulin. 4. If it is premixed insulin needs to be shaken well before injection. 5. After insulin injection, the insulin injection needle should be left under the skin for 10s before pulling out to prevent the insulin solution from leaking out. 6, Insulin in use does not need to be placed in the refrigerator and can be stored at room temperature below 25℃.