The steps in designing three meals a day for diabetes are: determining the total calories, determining the calories of each meal, determining the calories of each type of substance, and converting to specific foods. 1. Total calories: It is necessary to consider factors such as age, gender, weight and labor intensity. For example, young and middle-aged men who weigh 60kg and work light hours should consume about 2,000 calories per day. 2. Calories per meal: Diabetic patients are advised to consume 30%, 40% and 40% of calories for breakfast, lunch and dinner respectively, i.e., roughly 2000 x 30% = 600 calories for breakfast. 3. Determine the calories of each type of substance: for example, carbohydrates should occupy about fifty percent of the total calories of the day, that is, breakfast carbohydrate energy needs 600 calories x 55% = 330 calories. This is roughly equivalent to 80g of pure carbohydrates. 4. Converted to specific foods: each food may contain carbohydrates, you need to know the carbohydrate content of each food. If you eat milk and whole wheat bread for breakfast. Each 100ml of milk contains about 6g of carbohydrates, if you drink 250ml of milk, you have consumed 15g of carbohydrates, then the remaining 65g of carbohydrates need to be provided by the bread, the bread carbohydrate content of about 50%, that is, you need to eat roughly 130g of whole wheat bread, you can replenish the amount of carbohydrates required. Individualized dietary regimens can be developed for people with diabetes under the guidance of a clinical dietitian.