To prevent diabetes, we should develop good dietary habits, exercise, regular checkups, etc. Usually there is no specific food, you can usually eat more crude fiber foods, fresh vegetables and fruits, pay attention to balanced nutrition, and try to avoid high-calorie and high-sugar foods. 1. Adopt good dietary habits: Try to avoid high-calorie foods, such as fried foods, nuts, dried fruits, etc. in daily life. You can eat more food with coarse fiber, such as green vegetables, coarse grains and so on. 2. Exercise: you can enhance physical exercise, appropriate exercise, generally can choose aerobic exercise, such as running, jumping rope, swimming, playing badminton, etc., and pay attention to weight control, quit smoking and limiting alcohol. 3. Regular checkups: Generally, you need to go to the hospital for regular checkups of blood glucose, glycated hemoglobin, etc., and if necessary, you can do the glucose tolerance test. When abnormal blood sugar levels are found, it is recommended to consult a doctor in time.