Diabetes screening is as follows: 1. Routine physical examination: annual physical examination, including blood glucose, lipids, electrolytes, tumor marker screening, etc., and also includes electrocardiogram, chest X-ray, ultrasound examination, etc.; 2. Routine examination does not completely screen out early diabetes, more early diabetes is dominated by elevated postprandial glucose, according to statistics, more than 80% of early type 2 diabetes or diabetes dominated by high postprandial, most According to statistics, more than 80% of early type 2 diabetes or diabetes with postprandial high, most of which are normal during fasting and mainly with postprandial high blood glucose, need to do OGTT to make a clear diagnosis; 3. For high-risk people with diabetes in the immediate family, obese, sitting in the office more and exercising less, it is recommended to have an annual glucose tolerance screening for early detection of diabetes.