Hidden pain in the chest can be caused by a variety of reasons, the first is for middle-aged and elderly patients with hypertension, diabetes and other underlying diseases, usually combined with peripheral vascular disease and coronary atherosclerosis. After exertion, emotional stress or overeating, the patient will induce spasm of the coronary artery, which will be manifested as pain in the chest or accompanied by radiating pain to the back of the shoulder. This is a typical manifestation of myocardial ischemia, which should be promptly applied to improve the blood supply of coronary arteries, and should also pay attention to the correction of underlying diseases. In addition, some patients have pleurisy due to intrapulmonary infections, and they also have internal chest pain, accompanied by cough, sputum and fever. After systematic anti-infection treatment, the patient’s chest symptoms can gradually improve.