Allergic rhinitis in children is a common otorhinolaryngological disease, which is not directly related to body cold, but mainly caused by the imbalance of the patient’s own immune function. When the body is exposed to external allergens, it will easily lead to the body’s autoimmune reaction, causing the corresponding clinical symptoms. In terms of clinical symptoms, patients mainly show sneezing, runny nose and itchy nose, and they have repeated episodes. In terms of diagnosis, rhinoscopy and allergen testing can be done, which can be clarified by combining with the clinical experience of doctors. In terms of treatment, anti-allergy medication can be chosen, and saline can be used to rinse the nasal cavity at the same time.