Now is the spring blossom season, people enjoy the nature at the same time, some people after contact with pollen appear itchy nose, sneezing, runny nose, chest tightness, hold wheezing, cough, rash and other allergic symptoms, according to the survey found that the main allergens causing bronchial asthma and allergic rhinitis in Qingdao area are dust mites, pollen, mold, etc., July-September summer and autumn pollen is the most allergenic, mainly including artemisia, grass, ragweed, gray quinoa, spiny amaranth and other grass pollen. Ragweed, ash quinoa, spiny amaranth and other grass pollen, followed by spring pollen from March to May, mainly including cypress, poplar, elm, willow, fir, French sycamore, ash trees and other tree pollen, whose airborne pollen is an important cause of seasonal allergic rhinitis and asthma. During the pollen season, try to reduce going out, outdoor work and strenuous exercise, and avoid going to areas with high pollen concentration such as parks and other areas with more tree pollen in spring, and avoid climbing mountains or going to areas with more weeds such as grasslands in autumn. Pollen masks and closed glasses need to be worn when going out during the pollen season, which can block pollen from contact with the conjunctiva and nasal mucosa. In addition to environmental control, bronchial asthma and allergic rhinitis are important to identify allergens for prevention, in addition to adhering to standardized anti-inflammatory and anti-allergic treatment. And do specific immune (desensitization) treatment. Desensitization therapy has a history of more than 100 years. It is an injection given with gradually increasing doses of allergen extracts to make patients produce closed antibodies to reduce asthma and allergic rhinitis symptoms, or even the symptoms disappear. It is the only etiological treatment for bronchial asthma and allergic rhinitis. It can change the course of allergic disease and stop allergic rhinitis from developing into asthma, and likewise stop asthma from combining with allergic rhinitis. It can also reduce the amount of medication used by asthma patients and treat and control asthma at the root. In addition patients with allergic rhinitis in childhood who take desensitization treatment have a significantly lower incidence of asthma when they grow up. In order to better prevent and treat bronchial asthma, our hospital will hold a charity clinic for asthma and allergic diseases during the period from May 4 to May 8, the World Asthma Day, during which patients with bronchial asthma, allergic rhinitis, allergic dermatitis, allergic conjunctivitis, urticaria, eczema, food allergy and other allergic diseases will be given allergen On May 5, Professor Lu Dawen, a nationally renowned allergist, will be invited to sit in the clinic throughout the day, treating difficult allergic diseases and formulating desensitization treatment and standardized and individualized anti-allergy treatment plans for patients.