Dullness, palpitations, heart pain, often due to coronary heart disease or arrhythmia and other cardiovascular diseases, but also may be due to emotional tension or excitement and other reasons. 1. Cardiovascular system diseases: patients with coronary heart disease, arrhythmia and other heart diseases will appear myocardial blood supply and oxygen supply is insufficient, thus appearing, heart tightness, palpitations, and pain in the precordial area, a small number of patients at the same time will be accompanied by dyspnea and other symptoms, need to go to the hospital to do electrocardiogram and other related examinations, after a clear diagnosis, in the guidance of the doctor to use medication. 2. Emotional tension or excitement: in emotional tension or excitement after being frightened or strenuous exercise, due to the increase in myocardial oxygen consumption, there will be symptoms of heart tightness, palpitations, heart pain, usually after rest or stabilize the mood after the symptoms can be relieved. If it is due to cardiovascular system diseases caused by heart tightness, palpitations, heart pain, must regularly take medication, do not stop without authorization, otherwise there may be cardiovascular accidents.