There are many causes of vague heart pain, including coronary artery disease, myocarditis, pericarditis, lung cancer and gastroesophageal reflux disease. The location of the heart complained by the patient mostly refers to the left chest and under the sternum, and the nearby organs include the heart, lungs and lower esophagus, so the disorders of these organs may cause the feeling of vague pain in the location of the heart. 1, coronary heart disease: coronary heart disease is due to coronary artery narrowing or occlusion caused by myocardial ischemia and hypoxia or necrosis, clinical manifestations can have chest tightness and chest pain. Mostly related to exertion, emotional excitement, full meals, etc. If it is angina, rest or nitroglycerin containing can be relieved. Cardiac enzymes, troponin, electrocardiogram, echocardiogram, coronary CT, cardiac MRI or coronary angiogram can further diagnose heart disease problems. 2, myocarditis: viral myocarditis may have chest pain, there may be a history of upper respiratory tract infection before the onset of the disease, and arrhythmias are common. 3, pericarditis: pericarditis may have chest pain, and the symptoms of chest pain are mostly related to breathing, coughing, body position or swallowing. 4.Lung cancer: Patients with lung cancer may have vague or indescribable chest pain, which may be caused by tumor cell invasion, or by obstructive inflammation spreading to part of the pleura or chest wall. It is mostly accompanied by cough and hemoptysis, etc. People over 40 years old need to pay attention to exclusion. The diagnosis can be further confirmed by chest X-ray, lung CT, bronchoscopy, etc. 5, gastroesophageal reflux disease: gastroesophageal reflux disease is caused by the reflux of gastroduodenal contents into the esophagus causing discomfort. It is often accompanied by acid reflux and heartburn, and is aggravated when lying down or when abdominal pressure is elevated. Gastroesophageal reflux can cause chest pain without heartburn and reflux, which is not easily distinguished from the pain of ischemic heart disease. It can be clarified by barium meal examination, gastrointestinal endoscopy or B-ultrasonic examination. 6.Psychological factors: Cardiac neurosis and psychological factors can also cause similar symptoms. In the case that no clear cause can be found after careful examination, cardiac neurosis and psychological factors can be considered. Since there are more organs in the heart, it is not necessarily that the vague pain in the heart area is heart disease, patients should not diagnose themselves with medication, it is recommended that regular hospital consultation.