Patients with pulmonary heart disease should actively cooperate with their doctors to improve the management of the disease and improve their lifestyle to prevent recurrent acute exacerbations and slow down disease progression. Specifically: patients with pulmonary heart disease caused by chronic obstructive pulmonary disease or bronchial asthma should be treated with inhaled medication in a standardised manner, and those with pulmonary heart disease caused by other diseases should also be treated under medical supervision; patients with hypoxia (arterial partial pressure of oxygen below 60 mmHg without oxygen) should use oxygen therapy correctly, with home non-invasive ventilator therapy if necessary, especially in patients with hypoxia with carbon dioxide retention; quit smoking; and patients with Patients with lower limb swelling should control salt intake and those with chronic respiratory failure should increase protein and vitamin-rich foods (e.g. meat, fish, eggs and tofu, fresh vegetables and fruits) and reduce the intake of high-carbohydrate foods (e.g. rice, noodles, etc.); reduce inhalation of harmful gases or harmful particles; strengthen exercise to enhance immunity; prevent recurrent respiratory tract infections through influenza vaccination and pneumonia vaccination infections; reduce the chance of recurrent acute exacerbations of respiratory diseases.