Heart swelling and pain may be caused by myocarditis, angina pectoris, pleurisy and other diseases. Myocarditis: autoimmune factors, the myocardium is infected by germs are prone to inflammation of the myocardium, viral myocarditis is a common symptom manifested as chest tightness, chest pain and so on. Angina pectoris: angina pectoris is mainly caused by myocardial ischemia and hypoxia, insufficient blood supply to the myocardium is prone to chest tightness, chest tightness and pain and other symptoms, excessive diet, smoking, drinking alcohol is prone to angina pectoris. Pleurisy: the chest cavity is infected by pathogenic bacteria, pleural tissue suffering from diseases such as pneumonia, etc., easily triggered by pleurisy, so that people feel the discomfort of chest tightness and chest pain, and patients with serious conditions may experience dyspnea. If the patient’s symptoms of heart swelling and pain are more serious, it is recommended to go to the hospital, complete the relevant examinations, and cooperate with the doctor to actively carry out scientific treatment.