It can be summarized as “balanced nutrition with focus, structure distribution are reasonable. Limit sodium and potassium, less fat, and do not overindulge in a light diet. Research has confirmed that excessive preference for meat and vegetarian foods are not conducive to health, scientific diet should first achieve a balanced nutrition. ”Even” refers to the variety of varieties, that is, the best daily diet of cereals, potatoes, fruits, vegetables, dairy products, fats, fish and shrimp and meat can be included; “balance” refers to the total amount of relatively fixed, not only do not overeat, but also do not starve a full meal. The “focus” is to choose more food in the same kind of food is conducive to cerebrovascular food, such as cereals, choose more cereals rich in dietary fiber; animal food offal and fatty meat as far as possible not to eat, red meat in animal meat overall than bird and poultry meat; red meat overall than white meat (that is, fish), and fish in the deep sea fish is better than freshwater fish. Another layer of “focus” means: not not to eat, but to eat less, such as try to choose less pork and other red meat, but more deep-sea fish as a source of animal protein, but occasionally eat a little pork is not too much. A reasonable structure means that the proportion of various foods should be reasonable, forming a pyramid structure of grains (50%), fruits and vegetables (30-40%), and animal foods (10-20%). The distribution of nutrition in the three meals should also be reasonable, the basic principle is to eat a full breakfast, a good lunch and a small dinner. According to the physical condition, geographical location and dietary habits, the following are recommended: “343” (refers to breakfast accounted for 30%, lunch accounted for 40%, dinner accounted for 30%, the same below), “442” and “532 “, can also be adjusted according to the seasonal changes. Excessive sodium intake is one of the main causes of hypertension. Restricting sodium can not only reduce the onset of hypertension, but also directly lower blood pressure, which is important for preventing cardiovascular diseases. The main source of sodium intake is table salt, so the World Health Organization recommends that the daily salt intake should not exceed 6 grams per person. More intake of potassium salt not only promotes sodium discharge, but also has the effect of softening blood vessels and reducing blood viscosity, which is very beneficial to cardiovascular diseases. Potatoes, nuts, kelp, nori, mushrooms, bananas, orange juice and fresh vegetables are all rich in potassium salts. In addition, special salt such as “low sodium salt” and “health salt” can play a dual role in limiting sodium and replenishing potassium. Excessive intake of fats and oils is also one of the main risk factors for cardiovascular diseases, not to mention animal fats and oils, even vegetable oils rich in unsaturated fatty acids, should not be eaten in excess. Eat a light diet, and try to eat less fried, deep-fried and stir-fried food, and use more steaming, boiling and other cooking methods, and should eat the right amount of food, not too full.