Bedtime blood glucose 6.9mmol/L, if the usual maintenance therapy through long-acting insulin, but also need to continue to play long-acting insulin, change or stop the drug need to be under the guidance of the doctor. For patients who have been diagnosed with diabetes mellitus, after complying with the doctor’s instructions to regulate oral acarbose, metformin and other medications, injectable insulin therapy, fasting blood glucose control range of 4.4-7.0mmol/L, non-fasting blood glucose control range of ≤ 10.0mmol/L, so the bedtime blood glucose 6.9mmol/L belongs to the control of glucose to meet the standard. In addition, long-acting insulin preparations mainly provide basal insulin, which can control blood glucose well, and the incidence of hypoglycemia is low. Therefore, if a patient is normally on maintenance therapy through long-acting insulin, he or she will also need to continue using long-acting insulin. Insulin belongs to prescription drugs, need to be used under the guidance of a doctor, can be adjusted according to the patient’s blood glucose level in accordance with the doctor’s instructions, do not blindly stop and reduce the drug.