Porridge, noodles, milk, soybean milk, rotten rice, etc. Are the main foods, because these foods are nutritious and easy to digest and absorb; The following are some main nutritious foods. Protein is rich in food: egg rice, lean meat, poultry, fish, shellfish, milk, soybeans and their products, cereals, corn, sorghum, millet, sesame, sweet potatoes, potatoes, taro and leafy vegetables. Foods rich in fat: animal fat, grease, egg yolk, milk and milk fat, vegetable oil, soybean, peanut, sesame, sunflower seeds, etc. Foods rich in inorganic salts (i.e. calcium, iron and iodine): shrimp, shrimp skin, kelp, bean products, Chinese cabbage, green vegetables, potatoes, meat bones, viscera of mammals, eggs, beans, celery, mustard, Nostoc flagelliforme, jellyfish, shellfish, kelp and laver. Foods rich in vitamin A: liver, eggs, milk, eels, eels and oysters. Foods rich in carotene: carrots, sweet potatoes, spinach, alfalfa, shepherd's purse and pea seedlings. Foods rich in vitamin B 1: cereals, glutinous rice, flour, soybeans, peanuts, lean meat, liver and yeast. Foods rich in vitamin B2: animal viscera, eggs, milk, beans and green leafy vegetables. Foods rich in vitamin PP: cereals, peanuts, yeast, meat and animal offal. Foods rich in vitamin C: fresh green vegetables, peppers, bean sprouts, oranges, jujubes and hawthorn.