Patients suitable for desensitization therapy: 1. Strongly positive inhalant allergen test, and those with single or less allergic species are more suitable. 2. Desensitization therapy can be implemented for those who have poor results with medication. 3. Children and adolescents with allergies are more suitable than adults because they have better efficacy than adults, and can prevent new allergies and further aggravation of allergic symptoms in the future. 4.Patients with combined asthma or a tendency to develop asthma. 5.People who have severe symptoms and cannot tolerate long-term drug treatment. 6.Patients who are not obviously positive by allergen testing but are still highly suspected of being allergic to certain inhaled allergens may be considered for desensitization therapy as appropriate. Patients who are not suitable for desensitization therapy: 1. Patients with asthma who are developing asthma should not undergo desensitization therapy during the attack. Desensitization therapy should be started only after the symptoms have been controlled and relieved. 2. Women who are pregnant should not start desensitization therapy, but if they are already undergoing desensitization therapy, they can continue desensitization after pregnancy. 3. Those who are unable to adhere to the treatment for various reasons are not suitable for desensitization treatment, because once desensitization is started, it must be adhered to to the end.