Allergic rhinitis is a common disease in children, also known as allergic rhinitis, which is an abnormal or pathological immune response caused by the action of specific antigens and antibodies or target cells. The main symptoms of allergic rhinitis are persistent or intermittent nasal congestion, nasal itching or paroxysmal sneezing, mucus or plasma nasal discharge and loss of smell. Because of nasal itching and nasal congestion, children often blow their nose, aspirate their nose, wrinkle their nose or use their hands to sassafras their nose and other performance. Runny nose may also be the only symptom of pediatric allergic rhinitis, which can be complicated by bronchial asthma if not cured for a long time. Allergic rhinitis is mainly caused by allergens, allergens, also known as antigens, can be divided into inhalants, such as house dust, pollen, feathers, mites, cotton wool, etc., and ingestibles, such as eggs, milk, fish; contacts, such as paint, cosmetics, etc. As allergic rhinitis is closely related to asthma, sinusitis, chronic cough, otitis media and other diseases, it should be treated promptly when allergic symptoms appear. Treatment principles include the following: 1. Avoid contact with allergens as much as possible. Common allergens include fur, dust mites, cold air, dust, food (eggs, fish and shrimp), bacterial infections (such as reactions produced by bacteria on bacteria, toxins, etc.), pollen, etc. 2, the correct use of drug treatment, including local and systemic medication. 3.When available, allergen desensitization therapy can be performed, which can reduce the hyperreactivity of the nasal mucosa.