Many parents often ask me what to eat and what not to eat when their children have asthma. For this reason, I have included a special topic on asthma diet in my course “Family Management of Children with Asthma” for parents. In order to let more parents understand this information, I would like to give you a brief introduction of the three preferences and three contraindications for children’s asthma diet. The three main nutrients, protein, carbohydrates and fat, should be properly matched. Children with asthma are often in a state of oxygen deprivation during wheezing episodes, resulting in a weakened gastrointestinal tract digestive and absorption function, loss of appetite and reduced feeding, which affects the normal growth and development of children. Therefore, children with asthma should be supplemented with sufficient high-quality protein such as milk and eggs, which accounts for about 35% of their nutritional intake. Carbohydrates, such as rice and flour, are the main source of energy and should account for about 50% of the nutritional intake, but avoid over-eating gas-producing foods such as pasta, beans and potatoes. Fat intake should be small, accounting for about 15% of the nutritional intake. Because eating too much fat, affect appetite and gastrointestinal tract digestion and absorption, to the detriment of the disease, mainly by eating vegetable oils. 2, it is advisable to eat more food rich in vitamin A, B, C and iron, calcium. Vitamin A has the function of maintaining the normal development of the body and enhancing the body’s ability to resist disease. Vitamin B, C is involved in a variety of metabolic substances, and has increased appetite, to promote the role of lung inflammation absorption. In addition to the function of promoting growth and development, calcium also has anti-allergy and other functions. In addition, the body in order to improve the uptake of oxygen from asthma hypoxia, in order to reduce tissue hypoxia, there will be compensatory iron deficiency, supplementation must be increased accordingly. 3.It is advisable to drink more water. Especially when the acute attack of asthma, through the respiratory tract does not show increased water loss, children are prone to dehydration, and airway sputum will become sticky, not easy to discharge, so children with asthma should drink more water. Three taboos: 1. cold drinks and carbonated beverages. Asthmatic children’s airways are in a highly reactive state, cold stimulation can often induce airway spasm, causing asthma attacks, and carbonated beverages are often added with ingredients such as flavors, colors, etc., which are harmful to the human body, and the carbon dioxide gas it contains, is also detrimental to the lungs. 2, stimulating food and gas-producing food. There are chili peppers, pepper, mustard, curry powder, coffee and other irritating food, may induce airway spasm, so should try not to eat. Gas-producing foods are groundnuts, potatoes, leeks, soybeans, pasta, etc. They tend to produce a lot of gas, leading to abdominal distension, diaphragmatic uplift, limiting lung ventilation, and can also induce asthma, so children with asthma should try to avoid such food intake. 3, diet too sweet, too salty. Sweet and salty food can produce phlegm heat, too sweet and salty food may trigger asthma attacks, so the diet of children with asthma should be relatively light.