Allergic rhinitis and allergic bronchial asthma are both allergic diseases of the respiratory tract, and it is now accepted that these two diseases are “the same airway, the same disease”. According to the survey, more than 30% of patients with allergic rhinitis will aggravate and develop into bronchial asthma, so if patients with allergic rhinitis have a cough that is not cured for a long time, or have lower respiratory tract symptoms such as chest tightness and shortness of breath, they need to consult a respiratory doctor and undergo lung function tests.