Early diabetes generally refers to pre-diabetes, pre-diabetes can be controlled through diet, exercise and other ways, it is possible to return to normal blood glucose levels, to achieve “self-help”. Pre-diabetes includes impaired fasting blood glucose (i.e. fasting blood glucose is at 6.1~6.9mmol/L), abnormal glucose tolerance (i.e. blood glucose two hours after meal is at 7.8~11.0mmol/L), at this time, through dietary control, appropriate exercise, etc., it is possible to return to the normal blood glucose level. Dietary control includes maintaining a low-salt, low-sugar, low-fat diet, controlling total calorie intake, and eating small, frequent meals. Exercise exercise includes aerobic-based exercise such as jumping rope, jogging, swimming, and playing tai chi. People who are overweight or obese should adopt scientific methods to lose weight and maintain normal weight. Patients diagnosed with pre-diabetes should seek timely medical treatment and actively cooperate with doctors.