Type 1 diabetes with insulin pump or injectable insulin is possible, specific should follow the doctor’s advice according to their own situation to choose. Such as acute stage of diabetic ketoacidosis, acute stage of hyperosmolar coma; hyperglycemic patients with severe circulatory disorders; diabetic patients who are allergic to subcutaneous infusion tubes or adhesive tape should not use insulin pumps. Type 1 diabetes mellitus is the loss of pancreatic islet function in patients, and insulin therapy must be used to control blood glucose. At present, the commonly used insulin injection devices are insulin syringes and insulin pumps, and the routes of administration are intravenous injection and subcutaneous injection. Therefore, patients can choose the injection device according to their own situation. In addition to insulin treatment, patients with type 1 diabetes need to pay attention to self-management, regular monitoring of blood glucose, reasonable diet, reduce the intake of high-sugar and high-fat foods, eat a moderate amount of fresh vegetables and fruits, eat small meals and regular exercise. If blood glucose abnormalities occur, it is recommended to go to the hospital in a timely manner.