People at high risk for type 2 diabetes are advised to start screening for blood glucose as early as possible, including screening for fasting blood glucose and postprandial blood glucose, and to have annual health checkups if possible. People at high risk for type 2 diabetes include: ① Family history of diabetes, especially first-degree relatives with diabetes, their children have a significantly increased risk of developing diabetes; and if no intervention is made, the children may develop diabetes at an earlier age. ② Age > 40 years; the risk of developing diabetes increases with age. ③ Obese body type and body mass index ≥ 24. ④ Those with hypertension and/or cardiovascular or cerebrovascular pathology. ⑤ Pregnant women aged ≥ 30 years. (6) Those with a history of gestational diabetes; those who have delivered a giant baby. ⑦Some medications interfere with blood glucose metabolism, and those who use special medications, such as glucocorticoids and diuretics, may lead to elevated blood glucose. (8) Have a history of abnormal blood glucose, including elevated fasting blood glucose or elevated postprandial blood glucose. People at high risk with one or more risk factors can have glucose tolerance test every six months to facilitate early detection and early intervention. If there are already typical symptoms such as significant dry mouth, excessive drinking, polyuria, and unexplained weight loss, glucose tolerance testing should be performed immediately.