Mothers with high blood glucose during breastfeeding are advised to control their blood glucose at a relatively standardized state for breastfeeding, which can be achieved through diet, exercise and medication intervention. If blood glucose is too high during breastfeeding, the blood glucose will enter into the baby’s body through breast milk, and the baby’s insulin secretion will be higher than that of ordinary babies, and hyperinsulinemia will easily occur, and the child will easily develop type 2 diabetes when he/she grows up. Therefore, during breastfeeding, try to control your blood sugar at a relatively standardized state. In addition, if the blood sugar is too high during breastfeeding, the mother herself is also prone to various types of infectious diseases, including urinary tract infection, lung infection, mastitis and so on. If a breastfeeding mother’s blood sugar is high and still not up to the standard after control through diet and exercise, she needs to be controlled with insulin. Oral medication cannot be used at this time, because the medication can reach the baby through the breast milk and adversely affect the baby. Only insulin can be used to control blood glucose in a relatively normal state, generally fasting blood glucose control at 6.5-7.0mmol/L, two hours after meals blood glucose control at 8.0-8.3mmol/L, is considered to be basically meet the standard. High blood glucose during breastfeeding will have a bad effect on both the baby and the mother, so mothers should also monitor their blood glucose regularly, such as testing blood glucose with fingertip blood, to clarify the status of blood glucose, and then carry out reasonable interventions and treatments through diet, exercise and insulin.