Normal people’s total daily calorie needs need to be combined with their own body type (thin, normal, overweight or obese) and the intensity of daily activities (bedridden, light physical labor, medium physical labor, heavy physical labor) to be calculated by the appropriate formula; the formula is: total daily calorie needs = ideal body weight (kg) x calories per kilogram of body weight (kcal/kg). Usually, BMI is used to determine the body type, and the formula for calculating BMI is: BMI = weight (kg)/height ² (m), and the result of the calculation is <18.5 for a thin body type, 18.5≤the result of the calculation is <24 for a normal body type, 24-28 for overweight, and >28 for obesity. Adults with different body types and activity intensity need the following calories per kilogram of body weight, which can be calculated by substituting into the formula. 1. Lean body type bedridden (20 to 25), light physical (35), medium physical (40), heavy physical (40 to 45); 2. Normal body type bedridden (15 to 20), light physical strength (30), medium physical strength (35), heavy physical strength (40); 3. Overweight or obese body type bedridden (15), light physical strength (20 to 25), medium physical strength (30), heavy physical strength (35). For example, such as a healthy adult, height 170cm, weight 60kg, engaged in light physical labor; calculated BMI = 20.8, for the normal body type, the total daily calorie requirements = 60×30 = 1800kcal. Depending on the individual’s physical condition or the presence of other diseases, it is necessary to consult a professional physician or dietitian for guidance.