There are many causes of pain on the right side of the heart, and a specific judgment can only be made based on the nature of the pain, frequency and duration of the attacks, accompanying symptoms, signs and auxiliary examination results. It may include heart disease, pneumothorax, pleurisy, costochondritis, herpes zoster, etc. The tissues and organs that may be involved in the right side of the heart are the heart, lungs, and rib cartilage. 1, heart: more common is coronary heart disease (angina pectoris, heart attack, etc.). Angina is due to myocardial ischemia and hypoxia caused by coronary artery narrowing or occlusion, and the main clinical manifestation is episodic chest pain. The typical pain site is in the sternum, but the pain site of atypical angina can also be in the right chest. The nature of the pain is often compressive, stuffy or constricting, and some patients only feel chest tightness without chest pain. The onset of symptoms is often triggered by such things as going upstairs, rapid walking, exertion, a full meal, cold, or emotional stress, and can be relieved by quiet rest or nitroglycerin administration. The duration usually lasts from tens of minutes to more than ten minutes, mostly 3-5 minutes, and rarely more than half an hour. The site and nature of pain in heart attack are similar to angina, but the degree is more intense and lasts longer. People with hypertension, diabetes, hyperlipidemia, obesity, smoking history and family history of coronary heart disease need to be alerted to the possibility of angina pectoris or heart attack if they have episodes of chest pain. Cardiac enzymes, troponin, electrocardiogram, echocardiogram, coronary CT, cardiac MRI or coronary angiogram can be used to further diagnose heart disease problems. 2, lung: more common lung infection, spontaneous pneumothorax, pleurisy, lung cancer, etc. Spontaneous pneumothorax often has tearing-like pain at the beginning. Lung cancer is persistent and severe pain. Pain due to pulmonary causes is mostly aggravated by breathing or coughing. 3.Other: costochondritis can cause chest pain with local pressure pain but no redness or swelling; herpes zoster pain distributed along one side of the intercostal nerve with severe pain, and the pain does not exceed the midline of the body surface. Cardiac neurosis needs to be considered in those who fail to find organic pathology even after functional examination. Cardiac neurosis is most commonly seen in women between the ages of 20 and 40, especially in menopausal women. The symptoms are varied and may include chest pain with variable location, mostly in the precordial region, painful episodes unrelated to exertional activities, mostly occurring at rest, often pinprick-like, tugging-like or cutting-like in nature, with variable duration, usually long, and not relieved by nitroglycerin. However, there is no pathological evidence of organic heart disease.