Dietary regimen 1. The diet of elderly patients with cough and asthma should be light and easy to digest, and should not be too full, too sweet, too salty or too greasy. 2, should not eat stimulating food such as chili, garlic, onions, etc., should not drink stimulating drinks such as strong tea, coffee, wine, Coca-Cola, etc. 3. It is advisable to eat less heterosexual protein foods, such as fatty pork, mutton, dog meat, sea fish, clams, crab, shrimp, etc. Can eat vegetable soy protein, such as beans and soy products, etc. 4. It is advisable to eat more fresh vegetables and fruits such as radish, snow pear, loofah, loquat, orange and walnut, etc. 5, eat more vitamin A, C rich food can enhance the defense of the mucosal epithelial cells. Vitamin A in liver, kidney, egg yolk, carrots, pumpkin, apricots and other foods with high content. Vitamin C is high in citrus, tomatoes, hawthorn, kiwi, green leafy vegetables. 6, often eat edible mushrooms can regulate immune function and reduce the attack of bronchial asthma. Such as shiitake mushrooms, mushrooms, etc. Food therapy Cordyceps stewed with old duck: take 15 grams of Cordyceps and 1 old male duck, put the Cordyceps in the belly of the old duck, add water and stew. Suitable for asthma in remission.