Allergic rhinitis caused by certain allergens can be treated by desensitization, but not all allergic rhinitis can be desensitized. Allergic rhinitis is mainly caused by heredity and inhalation of allergens or ingestion of allergens, resulting in chronic reactive inflammation of the nasal mucosa. If it has been clearly diagnosed that the patient is suffering from inhalation of certain allergens such as dust mites and Artemisia, desensitization can be carried out in a targeted manner. Desensitization therapy is to use the identified allergens as desensitizing agents, initially in small doses for subcutaneous injection or sublingual intake, and then gradually increase the dose to the maintenance amount, and has been used for 2~3 years. After desensitization treatment, the patient’s body can produce a large number of specific IgG closed antibody, which can reduce the sensitivity of the mediator cells, thus playing a therapeutic role. Once allergic rhinitis, you need to go to the hospital in time, according to the patient’s specific condition and cause, using the appropriate method of treatment.