The recommended daily carbohydrate intake for diabetic patients should be 50% to 65% of total calories. In diabetic patients with poor postprandial glycemic control, the ratio of carbohydrate supply can be appropriately reduced. Extremely low-carbohydrate diets are not recommended for long-term use. Carbohydrates are composed of three elements: carbon, oxygen and hydrogen, and are the main source of energy required by all living organisms to maintain life activities, providing heat energy for the body; in general, the recommended daily intake of carbohydrates for diabetic patients should account for 50%~65% of the total calories. Diabetes requires a dietary program tailored to the individual’s specific situation. Consider visiting a hospital and consulting a nutritionist.