Some people think that the pain in the middle of the chest is chest pain, but in fact, the pain in the upper abdomen, that is, the pain under the saber is often referred to the pain in the chest, and its pain can be seen in a variety of reasons: 1, coronary heart disease can cause pain in this area, the pain mostly occurs when strenuous activity or emotional excitement, lasting a few minutes, often accompanied by shortness of breath, pain in the back of the shoulder, etc., can be relieved by rest or nitroglycerin; 2, gastroesophageal reflux disease: often in Gastroesophageal reflux disease: pain in the middle part of the chest often appears after meals, obvious when lying down, accompanied by acid reflux, heartburn and other symptoms, also seen in gastritis, gastric ulcer, which is often painful discomfort after eating, but reduced when fasting, gastroscopy can confirm the diagnosis; 3, pneumonia: there can be fever, chest pain, cough, coughing sputum, even coughing rust-colored sputum, lung CT can confirm the diagnosis; 4, other diseases can also cause pain symptoms in this area: such as pulmonary embolism, aortic coarctation, pneumothorax, costochondritis, intercostal neuralgia, cholecystitis, pancreatitis, etc. Therefore, many diseases can cause pain in the middle of the chest. It is recommended that patients go to the hospital as soon as possible to clarify the cause and treat the symptoms.