The pain in this location of the heart may be circulatory, digestive or respiratory diseases. First, the circulatory system is commonly caused by coronary heart disease angina pectoris, the general pain time will not exceed 30 minutes. The pain is characterized by more intense, and then the pain is accompanied by sweating, usually containing nitroglycerin can be relieved, if you can not confirm the diagnosis of the case, you can do electrocardiogram investigation. Secondly, there is another kind of pain that may be acute pericarditis, which causes chest pain that occurs at the same time with fever. The location of the pain is usually located in the anterior region of the heart, that is, behind the sternum, and it can radiate to the shoulders and neck accordingly. The pain is generally aggravated by coughing and inhaling, and can be aggravated by changing position, and is sometimes accompanied by pericardial effusion. Third, digestive system diseases, may be gastritis or reflux esophagitis, mostly in the full meal or lying down, accompanied by acid reflux, heartburn, regurgitation. Fourth, respiratory diseases, the more common pneumonia, pleurisy or chest tumors, they mostly have fever, cough, cough sputum, and even chest tightness and shortness of breath, so that is to do lung CT can be detected. Fifth, spontaneous pneumothorax, mostly related to exertion, aggravated by coughing, mostly with one side onset or both sides onset. Tumor, chest pain caused by tumor is often accompanied by corresponding clinical symptoms such as lethargy, fatigue, loss of appetite and so on. Seven, there are some dermatological diseases, such as herpes zoster, the initial stage may not be identified by ordinary patients, when herpes zoster appears, it is good to distinguish.