The regulation of insulin needs to pay attention to the amount and find the rule. If the patient has high fasting blood sugar, how should it be adjusted? Generally, it is necessary to review the blood glucose several times, and then the rule can be found. For example, if the medium or long-acting insulin is injected before bedtime, and the fasting blood glucose is >8.0mmol/L in the morning, then it is necessary to pay attention to the regulation of blood glucose in this case. If the blood sugar ≥ 4.0 mmol/L belongs to the “dawn phenomenon”, it generally means that the insulin dosage before bedtime is not enough, which leads to the normal fasting blood sugar in the morning, and it is necessary to increase the dosage, which can be gradually increased. If it is less than 4.0 mmoI/L, it is a reaction of Sumujie, which means that the insulin dosage before bedtime is too large, and the dosage should be reduced, because the body has a certain regulatory function to regulate the increase of blood sugar, so the high blood sugar is caused by the body’s reaction, and it is necessary to reduce the insulin dosage. In short, it is necessary to analyze the situation specifically to determine the adjustment of insulin dosage, and the adjustment of the amount of medication is also required to be applied individually.