Food allergic asthma should be stopped as soon as it is diagnosed, i.e. “avoiding food”. Strictly abstaining from food is the fundamental way to prevent and treat food allergic asthma. However, strict avoidance does not mean that all foods that may cause allergy should be avoided. We advocate avoiding whatever you are allergic to, which requires careful observation and medical examination (allergen monitoring, etc.) to determine. If you are not allergic to spicy and other irritating foods or cold, sweet, sour or salty foods, but you are intolerant, such as coughing when you eat them, you should also avoid them. Especially in the case of whistle infection, the avoidance of food should be more strict. The duration of the taboo depends on the type and degree of allergic food, except for those who are allergic to fish, shrimp, peanuts, etc. often need long-term taboo, generally avoid six months to a year can be, and then a small amount of trial food, such as still allergic, and then properly extended.