We know that the immune system protects our body against various microorganisms, but sometimes it is overprotective and misjudges harmless things, such as normal foods, as “enemies”, thus creating allergic reactions. Allergies are caused by a combination of genetic and environmental factors. If one of the parents has an allergic disease, such as allergic rhinitis or asthma, the child is twice as likely to have allergies as the general population. The increase in the incidence of allergic diseases is mainly related to environmental factors and changes in lifestyle, for example, now that hygiene is good, we all know that we need to disinfect and vaccinate, as well as insecticides and antibiotics are used more, which greatly reduces our chances of fighting various infections. In addition, changes in lifestyle, complicated interior decoration, more time spent indoors, etc., have greatly increased our chances of contact with indoor dust mites, pets, cockroaches, molds and other allergens, which has also increased the incidence of allergic diseases. Allergy is an exotic word, but allergic diseases are not exotic, they have been around since ancient times, although we don’t call them allergies, we have many nicknames for allergies, such as “delicate” for infants and toddlers, “small” for babies and “small” for children. We don’t call them allergies, but we have many nicknames for them, such as “delicate”, “small”, “picky”, “pretentious”, “snotty”, “snotty”. The “snore” gasping, out of the door “uncomfortable”, “pimple”. In fact, these are the local manifestations of allergic diseases considered by modern medicine as systemic diseases. Allergic diseases are the sixth most common chronic diseases in the world, and they are widely concerned by human society and the medical community as common diseases, multi-morbidity, environmental diseases and systemic diseases. With the rapid development of industrialization, the incidence of allergic diseases is rapidly increasing worldwide, affecting about 1/3 of the population. In the respiratory tract can be asthma, allergic cough; in the nose can be allergic rhinitis, sinusitis, nasal polyps; in the eyes can be allergic conjunctivitis; in the ear can be secretory otitis media; in the pharynx can be allergic pharyngitis, allergic tonsil talk; in the skin can be urticaria, angioedema, eczema, atopic dermatitis, contact dermatitis; in the digestive tract can occur allergic and eosinophilic gastroenteritis; in the brain can be hyperactivity, twitching, and even autism. Our 2009 survey showed that the incidence of allergic rhinitis was 8%-27%, and the incidence of bronchial asthma in children increased from 1% in 1990 to 3% in 2010. The most fatal is anaphylaxis, where life is at stake in just a moment. The sin may originate from a bottle of penicillin, a lobster, a flower, a ball game.