It should be correctly recognized that asthma is an autoimmune disease associated with allergic constitution and genetic factors. It is not caused by a substantial pathogenic bacterial infection and generally is not contagious. Therefore, asthma is not contagious. We should have a correct understanding of this disease. During an acute exacerbation, one could choose corticosteroid drugs, as well as antiallergic medications. Symptomatic treatments that relieve asthma symptoms and using oxygen to alleviate hypoxia are also options.