Protein, carbohydrate and fat should account for 60% to 65% of total energy, 15% to 20% and 25% respectively. According to relevant published data, the energy provided by protein, carbohydrate and fat should account for 60% to 65% of the total energy, 15% to 20% and 25% respectively. Because excess calories are stored in the body in the form of fat, which exceeds the normal physiological needs, obesity gradually evolves into a group of metabolic syndrome with excess energy, which often shows that the weight exceeds 20% of the corresponding height standard.