With the continuous improvement of people’s living standard, along with the increasingly westernized lifestyle, the incidence of diabetes is increasing year by year. According to incomplete statistics, the number of people suffering from type 2 diabetes is now nearly 40 million, which is the second highest in the world, second only to India. However, compared to the general diabetic population, another more insidious pre-diabetic state, including abnormal fasting glucose (IFG) and reduced glucose tolerance (IGT), is increasing year by year in the Chinese population, and the vast majority of them have no symptoms, so they must be taken seriously. So what is a pre-diabetic state? In layman’s terms, it means that these people have higher than normal blood glucose but do not meet the diagnostic criteria for diabetes, including abnormal fasting glucose (IFG), i.e. blood glucose after 8 hours of fasting: 6.1mmol/L, fasting glucose < 7.0mmol/L, reduced glucose tolerance (IGT), i.e. blood glucose two hours after eating: 7.8mol/L, postprandial glucose < 11.1mmol/L. These If these people are not properly intervened and treated after discovery, the number of people who become diabetic is about 5% every year, and pre-diabetes is also a risk factor for cardiovascular diseases including acute heart attack and cerebral infarction. In recent years, a large number of studies have found that the occurrence of pre-diabetes is related to many factors, such as: age, genetics, obesity, hypertension, coronary heart disease, long-term use of certain drugs (glucocorticoids, diuretics, antipsychotic drugs, etc.), and after the age of 40, many office workers due to work-related stress, socializing, car instead of walking, less exercise, long-term high-fat, high-calorie diet will not only appear obesity, hypertension, fatty liver, etc., but also the risk of cardiovascular disease. Therefore, medical experts remind that it is important to check the glucose tolerance after 40 years of age, so that early detection and early treatment can be made to avoid the early damage of diabetic complications. Once a patient is determined to be pre-diabetic, lifestyle changes are the most basic and simplest means of treatment, controlling diet, strengthening exercise and, if necessary, using some drugs under the guidance of a doctor can reverse the pre-diabetic state and prevent the occurrence of diabetes.