Myocardial bridge refers to the coronary blood vessels traveling under the myocardial muscle bundle, which is the coronary blood vessels innate so grown, usually usually does not cause myocardial ischemia symptoms, usually through the coronary artery CTA examination or coronary artery angiography examination to clarify the existence of myocardial bridge. Myocardial bridges, because the coronary blood vessels travel under the myocardial muscle bundles, when the myocardium contracts, it may cause compression of the coronary blood vessels, when the compression is slight, it will not cause any symptoms because it will not have a significant effect on the blood flow in the coronary blood vessels, which is the majority of cases. In a few cases, the contraction of the myocardium causes obvious pressure on the blood vessels, coronary angiography can be seen when the contraction of the pressure on the blood vessels significantly narrowed, and even up to 80% to 90%, which will cause distal myocardial ischemia, causing chest tightness and chest pain and other symptoms of myocardial ischemia. If myocardial bridge is serious, it can lead to myocardial ischemia or even myocardial infarction, which requires surgical release surgery or bypass surgery, and it is recommended to have reasonable diagnosis and treatment under the guidance of professional physicians.