Diabetes has become a household name nowadays, and it is known as one of the three high diseases along with hypertension and hyperlipidemia. The main prevention methods are knowledge of diabetes, a healthy diet and a good lifestyle. The onset of diabetes is generally a combination of endogenous and exogenous factors. Part of diabetes is hereditary, that is, it has a genetic background, which can not be changed, but it can be delayed or avoided by controlling the diet and strengthening exercise. Another part of diabetes is caused by external factors, mainly unhealthy diet and lifestyle. It is crucial to keep your mouth shut to prevent diabetes, not to overeat, to live and eat regularly, to eat slowly, to eat more vegetables, to eat less and more meals, to control the total amount, to drink more boiled water, not to stay up late, to avoid late night snacking, to quit smoking and to limit alcohol is the basis of diabetes prevention. In addition, it is to adhere to exercise, open legs, regular monitoring of weight, to maintain weight at a normal level for a long time. When the weight increases, you should promptly restrict your diet, increase the amount of exercise gradually and according to your ability, and bring your weight down to the standard range as early as possible. Regular monitoring of blood glucose, blood pressure and blood lipids should be done to prevent the progression of the disease by early treatment when abnormal indicators appear. Therefore, the prevention of diabetes requires attention in many aspects, including diet, exercise and monitoring, and once the abnormalities of blood glucose appear, you should seek medical attention as soon as possible.