Sleeping on your back with chest pain may be related to pleurisy, lung lesions, pericarditis, angina, etc. 1. Pleurisy: It is a kind of inflammation that occurs in the pleural cavity, which may be caused by injury, infection, tumor and other reasons. Due to the stimulation of inflammation, patients may experience chest pain, chest tightness, shortness of breath, coughing and other symptoms, and sleeping on the stomach may also feel chest pain. 2. Lung lesions: such as pneumonia, tuberculosis, lung tumors, etc. can cause chest pain symptoms, which may also be accompanied by cough, sputum, shortness of breath, fever and other symptoms, sleeping on the stomach will have chest pain. 3. Pericarditis: generally due to bacterial infection or viral infection, tuberculosis, malignant tumors and other triggers of pericarditis, can appear chest pain symptoms, there may also be dyspnea, palpitations and other symptoms, sleep on the chest will have chest pain performance. 4. angina: coronary artery stenosis, occlusion caused by coronary blood flow reduction, can cause myocardial hypoxia ischemia, angina pectoris, resulting in chest pain, chest tightness and other symptoms, sleep on the stomach symptoms are more obvious. It is recommended that patients who sleep on their stomachs with chest pain go to the hospital in time to find out the cause of the chest pain under the guidance of a doctor.