Left anterior descending muscle bridge may lead to sudden death, which is rare in people who are involved in strenuous exercise and physical labor. Left anterior descending muscle bridge is a congenital disease that occurs mainly in the heart, and many patients do not show symptoms, but once the patient develops the disease, it will lead to blood vessel compression symptoms, resulting in the phenomenon of breathlessness. For the left anterior descending branch myocardial bridge serious patients, it is possible to feel discomfort in the precordial area, such as chest pain, chest tightness, etc., but rarely cause malignant events, there are also serious patients caused by myocardial bridge peripheral formation of blood clots, very easy to form arterial plaque. There are also very serious patients, sudden death phenomenon, mostly seen in strenuous exercise or athletes, but this situation is relatively rare. It is recommended that patients with left anterior descending branch myocardial bridges should pay attention to regular checkups and communicate with their doctors as soon as they notice any discomfort, so as to avoid malignant events. Also pay attention to try not to overwork, also do not strenuous exercise.