Blood glucose control in pregnant women is categorized into two situations; high pre-pregnancy blood glucose should be controlled before pregnancy, and high post-pregnancy blood glucose should be controlled after it is detected, usually continuing throughout. High pre-pregnancy blood glucose may be diagnosed before pregnancy or have risk factors for diabetes, such as obesity, first-degree relatives with type 2 diabetes, etc., which should be controlled before pregnancy until delivery. If elevated blood glucose occurs after pregnancy and the criteria for a diagnosis of gestational diabetes are met. Glycemic control is required throughout the pregnancy after detection. In addition to this, a small number of postpartum still need to control blood glucose, usually 6 to 12 weeks postpartum OGTT examination, it is recommended to closely monitor the changes in blood glucose during pregnancy, and if there is any abnormality, you should seek medical attention promptly.