Hidden pain on the right side of the heart may be due to heart problems, lung problems, etc. 1. Heart problems: the more common is coronary heart disease (angina pectoris, heart attack, etc.). Angina pectoris is caused by myocardial ischemia and hypoxia due to narrowing or occlusion of coronary arteries, 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. It is recommended that the patient should consult the hospital in time to improve the electrocardiogram, cardiac enzymes, coronary CT and other tests to clarify the diagnosis. 2. Lung: Lung infection, spontaneous pneumothorax, pleurisy, lung cancer, etc. are more common. Spontaneous pneumothorax often has tearing pain at the beginning. Lung cancer is persistent and severe pain. The pain caused by lung is mostly aggravated by breathing or coughing. It is recommended that the patient improve chest CT to clarify the diagnosis. Patients with vague pain on the right side of the heart are recommended to go to regular hospitals for consultation.