The life expectancy of a patient with bronchial asthma has little to do with the disease itself. Some patients have better disease control and do not have bronchial asthma attacks for many years, at which point it does not affect the patient’s life expectancy. However, some patients have serious allergies and obvious airway spasm, which will lead to bronchial asthma attacks periodically, and as the disease progresses, it will lead to chronic respiratory failure, chronic pulmonary heart disease and other diseases, which can affect the survival rate of the patient, and the life expectancy of the patient will be reduced by 10 years or even more than 10 years compared with normal people. Therefore, bronchial asthma should be actively prevented to prevent recurrent attacks from affecting the survival rate.