Being thin is one of the manifestations of malnutrition, which is usually caused by insufficient food calorie intake or increased body calorie consumption, resulting in a negative balance of calories, leading to fat accumulation in the body and protein deficiency. Patients generally show weight loss, skin laxity and lack of elasticity, subcutaneous fat loss and muscle atrophy. There are many reasons for wasting, and the common ones are: (1) insufficient food intake; (2) Digestive dysfunction, such as the lack of amylase, bile, pepsin and pancreatic amylase in digestive juice and saliva, directly affects food digestion and nutrient absorption; (3) Obstacles in absorption, food is mainly absorbed in the small intestine, and the absorption of nutrients is reduced, which can cause emaciation, such as chronic diarrhea; (4) Diseases of endocrine system and nervous system. The treatment of emaciation should be based on its etiology, but ultimately it should be regulated by diet. 1 Dietary principles 1. 1 Thin people need to consume more calories than they do to get fat. In this way, excess heat can be converted into body fat, making the body plump and gaining weight. 1.2 Adequate protein and calorie supply should be ensured in the diet. Protein in animal protein and food accounts for 40-50% of the total in protein. 1.3 The diet should be diversified, not partial eclipse. Whether flour and rice are mixed with miscellaneous grains and beans, mixed with meat and vegetables, and have a balanced diet. In addition, paying attention to the adjustment of food color, fragrance and shape is also very beneficial to improve appetite and promote digestion and absorption. 1.4 appropriately increase the number of meals or add some high-calorie sweets. Thin people have insufficient calories and poor gastrointestinal function. If they eat too much at once, they will suffer for it. The interval between meals is too long, and the food intake is small, and the food nutrition is in short supply, which is not conducive to gaining weight. The author introduces four diet recipes for your reference. Braised pork belly with lotus seeds. 30g lotus seeds and 1 pork tripe. Wash lotus seeds, soak them in cold water, and take out lotus plumule for later use. Wash pork belly, cut into pieces, put it in a pot with lotus seeds, add appropriate amount of water, add sesame oil, refined salt, onion and ginger; Cooking wine and other spices, simmer until cooked, you can eat. As a dish, help yourself. The effect is to tonify kidney and spleen, tonify deficiency and regulate menstruation. Mutton stew with mushrooms. 50 grams of mushrooms and 500 grams of mutton. Pick and wash the mushrooms, soak them in boiling water, take them out, and keep the remaining soup. Grab the mushrooms with salt, blanch them with boiling water, and take out the slices. Wash the mutton, cut it into cubes, soak it in cold water for 2 hours, and take it out. Heat the pot, add water, add mutton, add ginger, onion, fennel, star anise and cinnamon, cook for several times, add wine, pour mushroom soup, simmer until 80% is rotten, add soy sauce, salt, mushrooms and monosodium glutamate, and simmer until cooked. Serve. As a dish, help yourself. The effect is to tonify qi and blood, strengthen the body and increase weight. Sweet longan and red dates soup. Longan meat 30g, red dates 10, sugar 30g. Wash the longan pulp, soak the red dates in cold water (remove the core), put them into the pot with white sugar, add appropriate amount of water, simmer with slow fire to form a thick sweet soup, and sprinkle with a little osmanthus. Take it on an empty stomach in the morning. The effect is to stimulate appetite, strengthen the spleen, tonify deficiency and increase fat. Braised pork. Pork belly 500g. Wash the pork belly, cut it into pieces with a length of 7cm, a width of 4cm and a thickness of 1cm, put it in a bowl, add soy sauce, rock sugar (crushed), cooking wine, allspice powder and monosodium glutamate, and marinate it evenly for 5 minutes. Spread the marinated ribs with onion and Jiang Mo evenly, pour in the marinade, heat the pot, add appropriate amount of vegetable oil, add appropriate amount of water when it is 70% hot, cook the meat, then turn the fire to low heat, add appropriate amount of soy sauce, cover the pot tightly, and simmer on low heat until the ribs are cooked. As a dish, help yourself. The effect is to tonify the middle energizer, replenish qi, gain muscle and gain weight.