Patients with early diabetes are recommended to receive individualized medical nutrition therapy formulated by a dietitian to develop good eating habits, determine reasonable energy intake, and distribute nutrients in a rational and balanced manner. Medical nutrition therapy is a basic management measure for diabetes and is an important part of comprehensive management. Early control of diet can relieve the symptoms of diabetes patients, and it is best formulated by a dietitian, which mainly includes the following points: 1. Reasonable control of total calories: total energy intake should be controlled, for people whose weight is lower than the ideal weight, children, pregnant women and other people can appropriately increase their energy intake by 10% to 20%, and reduce energy intake as appropriate in the case of obesity, so as to bring their weight back to normal gradually. 2. Nutrient distribution: ensure the intake of carbohydrates, which should account for 50%~60% of the total calories, the total amount of staple food intake of adult patients is 250~400g, and the obese people are controlled at 200~250g. Protein should account for 15%~20% of the total calories, and fat should account for no more than 30% of the total calories. 3. Reasonable meal allocation: according to individual living habits, make personal recipes, regular diet, pay attention to the order of meals. 4. Follow-up: adjustments should be made at any time according to one’s own requirements to develop good eating habits. Diabetic patients follow the doctor’s instructions for treatment, medication and diet are adjusted together, and attention is paid to physical exercise.