The goal of diabetes treatment is to enable patients to maintain the same life expectancy as normal people, and insulin-dependent diabetics need to administer their own insulin to achieve this goal. In order for insulin self-injection to be successful, health care providers must provide adequate instruction to patients and confirm that patients have a certain level of understanding of diabetes and the ability to perform their own injections and prevent accidents before implementation. Self-injection of insulin should be noted.1. First determine the meal time, the injection should be 15-30 minutes before the meal.2. Prepare the alcohol cotton ball, injection device and insulin.3. Check the insulin type agent again and double check the quality of the liquid.4. Choose the injection site.5. Disinfect the skin of the injection site with alcohol cotton ball, about 5cm range in diameter.6. Insert the needle for extracting insulin vertically and quickly into the Make sure the part of the needle enters the skin. 7.Try to draw with or without returning blood, if there is no returning blood, slowly push the needle handle and inject insulin into the body. 8.Pull out the needle quickly and use a dry cotton ball to lightly press the injection site without rubbing. Contraindications to self-injection of insulin 1. those with motor impairment due to paralysis or muscle atrophy, 2. those with high visual impairment due to retinopathy or other reasons, 3. those with mental impairment or low intelligence and lack of ability to prevent accidents, 4. those with skin diseases or infectious skin diseases, 5. those with bleeding disorders.