The diet of patients with bronchial asthma should be light, less stimulation, should not be too full, too salty, too sweet, avoid cold, wine, spicy and other stimulating foods. Allergic body should eat less heterogeneous protein food, once found that a certain kind of food can indeed trigger the onset of bronchial asthma in patients, should be avoided, it is advisable to eat more plant-based soy protein, such as beans and soy products. Diet should ensure the adequacy and balance of various nutrients, especially should increase the antioxidant nutrients such as β-carotene, vitamin C, E and trace elements such as selenium. Antioxidant nutrients can scavenge oxygen free radicals, reduce oxygen free radical damage to tissues, reduce bronchial trace element selenium method of preventing asthma, can be seen in the affected children to reduce the number of episodes, increased ventilation. β-carotene, vitamin C, E in fresh vegetables and fruits are rich in trace element selenium in kelp, jellyfish, garlic in the content of the richer. Prevent respiratory infections, regulate immune function is also very important, should pay attention to seasonal warmth, infants should be breastfeeding, breast milk contains secretion-type immunoprotein antibodies, can increase the resistance of the respiratory tract. Often eat edible mushrooms can regulate the immune function, such as shiitake mushrooms, mushrooms containing shiitake polysaccharide, mushroom polysaccharide, can enhance the body’s resistance to reduce the attack of bronchial asthma.