Pulmonary corn nodules need to be treated because most of the diseases that cause pulmonary corn nodules are not self-healing, and these diseases are serious. Pulmonary cornu nodules can be seen in exogenous allergic alveolitis and some pulmonary vasculitis, which require appropriate glucocorticoid therapy. Pulmonary cancer can also cause pulmonary corniform nodules, such as bronchoalveolar carcinoma. If patients with lung cancer are not treated in a timely manner, the disease will progress rapidly and survival will be significantly shortened. Therefore, when corn-like nodules are found in the lungs, they need to be treated with appropriate interventions to address the cause of the disease.