The diet of pre-diabetes should be reasonable, small meals, low-salt, low-fat and low-sugar diet, etc.; Exercise should be mainly aerobic exercise, which is recommended to be carried out after meals and insisted on for a long time. Pre-diabetes refers to blood glucose is higher than normal but does not meet the diagnostic criteria for diabetes, which is divided into impaired fasting blood glucose and abnormal glucose tolerance. Prediabetes is generally diet and exercise to control blood sugar. Diet, reasonable control of the total daily intake of energy, nutrients reasonably distributed, small meals, low-salt, low-fat, low-sugar diet, not recommended to eat greasy, fried food, eat more protein-rich, dietary fiber food, staple food to coarse grains, such as brown rice, buckwheat noodles and so on. Exercise, should be reasonable exercise, step by step, and long-term persistence, it is recommended that 150 minutes per week of moderate-intensity exercise, aerobic exercise, such as swimming, jogging, jumping rope, cycling, etc., it is recommended that exercise exercise half an hour after meals. Those who have abnormal blood sugar should go to the hospital and be treated under the guidance of the doctor.