Pulmonary heart disease is a heart disease due to increased resistance to pulmonary circulation and pulmonary hypertension, which in turn causes dilatation and hypertrophy of the right heart, with or without right heart failure. The most common clinical causes of pulmonary heart disease are bronchial and pulmonary diseases, which account for about 80% to 90% of cases. Other causes include severe thoracic deformities, pulmonary vascular disease, and neuromuscular disease. The most common cause of exacerbation in patients with pulmonary heart disease is respiratory tract infection. If accompanied by respiratory tract infection, anti-inflammatory treatment should be actively carried out, and it is best to carry out sputum bacterial culture plus drug sensitivity at the same time, so that antibiotics can be more targeted selection. For patients with lower extremity swelling, pleural effusion, cardiac insufficiency, but also combined with diuretic therapy, at the same time can be combined with the application of small doses of cardiac drugs. Correcting heart failure can help relieve patients’ dyspnea and wheezing symptoms, but at the same time of correcting heart failure, airway dilation, phlegm and asthma treatment should be given. Commonly used drugs in clinical practice are anticholinergics, theophyllines, and β2 agonists. The application of the above medications must be accompanied by daily oxygen therapy for at least 6 to 8 hours a day. Arterial blood gas analysis should be performed after admission to the hospital to assess the severity of respiratory failure and to determine whether there is an acid-base imbalance. In patients with severe respiratory failure, mechanical ventilation should be combined to improve and correct the acid-base imbalance. For patients with right heart failure, the use of phosphodiesterase inhibitors can be given to correct the treatment. Pulmonary heart disease is one of the more serious diseases in the clinic, and has certain difficulties in treatment. In addition to the fact that the sick people are often elderly, regardless of whether there is a change in the condition every day, should be regularly monitored blood gas analysis, blood routine, ion, kidney function, in order to early detection of the trend of changes in the condition, corrective treatment.