Pulmonary heart disease can be treated with oxygen, and it is necessary to do so because one of the more important treatments for pulmonary heart disease is oxygen therapy, which corrects hypoxia and carbon dioxide retention through oxygen inhalation, either by nasal cannula or face mask, because pulmonary heart disease is caused by elevated pulmonary vascular resistance due to lesions in the bronchi, lung tissue, and thorax, pulmonary vasculature, resulting in pulmonary hypertension, changes in the structure and function of the right ventricle leading to Pulmonary heart disease, and hypoxia and carbon dioxide retention can occur. In addition to oxygen therapy, there are treatments for infection control and correction of heart failure, and oxygen therapy should be administered at a low flow rate to reduce the concentration of oxygen. In addition, nasal catheter oxygen is simple and convenient, but the concentration is unstable, while the concentration of mask oxygen is relatively stable, but it is inconvenient for patients to eat and drink.