Allergic rhinitis and bronchial asthma are the same airway and the same disease. Patients often come to the respiratory clinic mainly because of cough, wheezing and dyspnea, and are later diagnosed as bronchial asthma after examination. In fact, allergic rhinitis and bronchial asthma often go hand in hand, both occur in different parts of the same airway and are allergic diseases, medically known as the whole airway inflammatory hyper-reactive syndrome. Allergic rhinitis is often a risk factor for allergic asthma. In clinical work, we find that some patients with allergic rhinitis do not develop asthma for many years, but most patients with bronchial asthma often have allergic rhinitis, and the latter is the triggering factor and pre-expression of asthma, that is, a considerable number of asthma patients have symptoms of allergic rhinitis before the asthma attack. According to statistics, the proportion of patients with allergic rhinitis who develop bronchial asthma is as high as 40% to 60%, and the risk of asthma in patients with allergic rhinitis is 8 to 20 times higher than in normal people. Allergic rhinitis and asthma share a common cause, which is the patient’s allergic constitution and the high allergic reactivity of the respiratory tract (or airway). When allergic substances invade the respiratory tract, they first stimulate the nasal cavity, the entrance to the respiratory tract, and the mucous membrane of the nasal cavity becomes allergic and the first symptom of asthma, so allergic rhinitis needs to be treated to prevent asthma attacks, which means that allergic rhinitis must be treated first to prevent asthma. When you or your family members have frequent itchy nose, continuous sneezing, runny nose and nasal congestion, you should seek medical attention. Aggressive treatment of allergic rhinitis can prevent the development of bronchial asthma. Anti-allergic drugs are commonly used in the treatment of allergic rhinitis. It is clinically proven that the use of specific immunotherapy (or desensitization therapy) for the prevention and treatment of this disease, combined with local medication, can effectively reduce airway reactivity, antagonize allergic inflammation, control rhinitis, and prevent asthma attacks.