1. Estimation of insulin dose for the initial use of insulin Total dose (u) ≈ fasting blood glucose (mmol/l) × 2 If it is more conservative, it can be ≈ (fasting blood glucose mmol/l × 2) × 2/3 2. Secondly, hypoglycemia will bring psychological burden to patients, who think that hypoglycemia will occur even with the help of hospital doctors, and may occur even more without the help of doctors at home, and therefore have certain psychological barriers to strict blood glucose control, which is unfavorable to future blood glucose control. 4, for newly admitted patients complaining of insulin dose, if there is no written material, when giving the dose must pay attention to the prevention of hypoglycemic events; 5, to mix insulin before use must be mixed; 6, their own short-acting and long-acting insulin, pumping method is first short and then long (this estimate has been rarely used, thanks to the convenience of technological progress to people it); 7, insulin hypoglycemic effect observation ( Experience): probably 1u insulin to make blood sugar drop 1mmol/l up and down, of course, but also specific analysis of specific problems.