Asthma is an allergic disease and a chronic disease, related to the chronic inflammatory response of the airways. How to determine asthma can be determined from the following aspects: 1. The symptoms are typical during an attack, which is a hyperresponsiveness of the airways after exposure to allergens, such as coughing, coughing, wheezing, chest tightness and shortness of breath. 2. Diffuse croup can be heard in the lungs. 3. The above symptoms can be relieved on their own, or after asthma calming medication 4.Pulmonary function test, bronchial excitation test or bronchodilatation test is positive. 5.Exclude other diseases that cause chest tightness, such as chronic obstructive pulmonary bronchiectasis and lung tumor. According to the above points can be judged as asthma, asthma should take long-term, standardized treatment.