Almost everyone has had the experience of abdominal pain, eating bad food, cold diarrhea can cause abdominal pain. Generally, people think that it is very common, so they can endure it and pass, and if not, they can get over it with a hot compress. In fact, abdominal pain is a very common condition in hospital emergency departments, and it is also one of the most complex clinical reactions, with about hundreds of diseases that may cause abdominal pain. For patients who come to the hospital with abdominal pain, the doctor will usually prescribe an abdominal ultrasound, routine blood tests, blood biochemistry and, if necessary, an electrocardiogram. This is when some patients get upset, “Why do I need an EKG for abdominal pain?” “Doctors prescribe tests indiscriminately to make money!” And many times, a small abdominal pain hides a big problem, even directly related to heart disease. If the abdominal pain is caused by a heart problem it can be very fatal and must be taken seriously. Here are the more common cardiogenic abdominal pain, the most common and deadly is the abdominal pain caused by acute myocardial infarction, about 8% of patients with myocardial infarction in the early reaction of abdominal pain, nausea, it is easy to misdiagnose as stomach disease. Therefore, people who have coronary heart disease and angina themselves must have an electrocardiogram immediately when they have sudden abdominal pain to screen for the possibility of acute myocardial infarction. In addition angina can also cause abdominal pain. When angina occurs, coronary blood flow decreases, myocardial ischemia and hypoxia, and the accumulation of excessive myocardial metabolites can produce pain, mainly in the epigastric region. Most of this type of pain is activity-related and can be relieved by rest, and is easily misdiagnosed clinically as acute gastroenteritis. There is also aortic coarctation, which has a very high mortality rate. The clinical manifestations of this disease are very complex and the misdiagnosis rate is also high. Aortic coarctation is mostly seen in hypertensive patients, and the attack is mainly chest pain, but also low back pain and abdominal pain, which may radiate to the lower limbs, and may be misdiagnosed as acute gastric perforation and acute pancreatitis. Middle-aged and elderly people with a history of hypertension should pay high attention to persistent low back and abdominal pain once it occurs, and it is best to immediately consult a doctor and have a CT examination to further confirm the diagnosis. Now I believe that the doubts about the case at the beginning have been solved, which is actually caused by acute myocardial infarction. We would also like to remind our middle-aged and elderly friends with cardiovascular diseases that once severe abdominal pain occurs, they must seek medical consultation and examination in a timely manner. I also hope that you can be more understanding of doctors when you see them, abdominal pain to do electrocardiogram examination is sometimes necessary, do not just blame the doctor. Especially in the emergency department of a hospital, there are many patients and their conditions are urgent, so there is no way to explain to the patients one by one, which is one of the reasons for the increasing tension between doctors and patients. We need to understand and trust each other in order to better fight diseases and guard our health.