Pulmonary heart disease, referred to as pulmonary heart disease, is a disease in which bronchopulmonary tissue, thoracic, or pulmonary vascular pathology leads to an increase in pulmonary vascular resistance and produces pulmonary hypertension, followed by structural and/or functional changes in the right ventricle. Depending on the urgency and duration of the disease, it can be categorized into chronic and acute pulmonary heart disease. The pathogenesis of pulmonary heart disease is the increase of pulmonary vascular resistance caused by various reasons, as well as the increase of blood viscosity and blood volume, leading to the formation of pulmonary arterial hypertension, and then the right heart to play its compensatory function, the right ventricular hypertrophy occurs, and when the right heart is not compensated for, it can lead to the enlargement of the right ventricle and the right heart failure. According to the urgency and duration of the disease, it can be divided into chronic and acute pulmonary heart disease. Acute pulmonary heart disease is common in acute massive pulmonary embolism. It may be manifested by coughing, coughing up sputum, shortness of breath, palpitation after activity, dyspnea, decreased labor endurance, and even symptoms of respiratory failure and right heart failure. If the above symptoms occur, it is recommended to go to the hospital in time for early and regular treatment.