If a patient experiences palpitations and chest tightness, the condition may be due to a disorder of vegetative nerve function or cardiac neurosis. In elderly patients or those with a history of hypertension, diabetes or coronary artery disease, it is likely that angina pectoris is the cause of the discomfort. If necessary, it is recommended that the patient should undergo appropriate tests to clarify the diagnosis. An ambulatory electrocardiogram, cardiac ultrasound and CT lung examination can be performed, because chest tightness itself may be caused by lung diseases, such as lung infections and lung occupations, which may lead to palpitations and chest tightness. In addition, in addition to coronary heart disease that may cause palpitations and chest tightness, there are also hypertrophic obstructive cardiomyopathy and aortic stenosis, all of which may cause palpitations, chest tightness and other uncomfortable symptoms to appear.