Variant asthma is one of the types of bronchial asthma, so it is not possible to say which one is difficult to treat, and its treatment varies according to the individual and the condition. The typical symptom of bronchial asthma, referred to as asthma, is episodes of expiratory dyspnea, which may be accompanied by chest tightness, coughing or shortness of breath. In addition to typical asthma, if a patient with asthma has a cough as the only manifestation, it is called cough variant asthma; if chest tightness is the only manifestation, some people call it chest tightness variant asthma. The severity of asthma relies heavily on lung ventilation function and blood gas tests to determine the severity of asthma, and treatment is primarily aimed at long-term symptom control and prevention of future risks. Through long-term standardized treatment, most patients with mild disease can achieve clinical control; those with severe disease or with other allergic diseases are not easy to control. If the attack is repeated for a long period of time, it can be complicated by pulmonary heart disease, and the prognosis is poor. Asthma patients should adhere to long-term medication under the guidance of professional physicians to achieve clinical control.