More than 97% of diabetics in China are type 2 diabetics, and type 2 diabetes is preventable and controllable. Four groups of vulnerable people in particular should pay attention to the active prevention, early detection and treatment of diabetes. The first thing we need to look at is the type of diabetes, because more than 97% of people in China have type 2 diabetes, so we focus on the people who are vulnerable to type 2 diabetes, so who is vulnerable to type 2 diabetes? First, people over 45 years old. Second, obese people, especially abdominal obesity, the stomach is relatively large people. Male obesity is also known as male obesity, or apple-shaped obesity, unlike female pear-shaped obesity, this kind of people are often associated with diabetes. In addition, there is a family history of diabetes, someone in the family has diabetes, especially the immediate family members have diabetes to pay attention to. There are also special groups of people who had gestational diabetes when they were pregnant, and the probability of getting diabetes is also relatively high. In fact, type 2 diabetes can be prevented. We have a lot of evidence that lifestyle interventions can reduce the risk of diabetes in half of the population, so lifestyle interventions can prevent diabetes. These people should be vigilant, first of all, to do a good job of lifestyle intervention, pay good attention to diet, enhance exercise, maintain good weight, and also go to the hospital for regular checkups. These susceptible people, like those mentioned earlier, should check their blood glucose once a year to detect blood glucose problems early, intervene early, prevent, and truly prevent diabetes from occurring. We mentioned that there are three levels of diabetes management, primary prevention, secondary prevention and tertiary prevention. Primary prevention is to make more people not to have diabetes, that is, to prevent the occurrence of diabetes, but once you have diabetes, diagnosed with diabetes, then it is the second level of prevention. The main task of secondary prevention is to reduce complications, or not to have complications, or to delay the onset of complications, but if complications are already present, then it is tertiary prevention. The main task of tertiary prevention is to minimize disability and death, improve quality of life, and prolong life. Undoubtedly, primary prevention is the most important.