The heart is comfortable only after hiccups, considering the occurrence of gastrointestinal diseases, lower wall myocardial ischemia and other diseases. 1. Gastrointestinal diseases: Because there is only one layer of diaphragm between the heart and the stomach, when suffering from gastric distension, reflux esophagitis, gastric motility is weakened, it is easy to have flatulence of the stomach, and the flatulence of the stomach will lead to the heart topping upward, which will cause the heart to be uncomfortable. However, after burping and exhausting, the bloating will be relieved, which can bring the heart back to its original position, and the heart discomfort will be reduced. 2. Lower wall myocardial ischemia: When myocardial ischemia occurs in the lower wall, it will stimulate the diaphragm, and below the diaphragm is the stomach. When myocardial ischemia occurs, it will affect the normal beating of the myocardium, which is transmitted through the diaphragm in the gastrointestinal department, and will easily lead to hiccups, abdominal distension and so on. After hiccups, the vagal tone will decrease, so the heart discomfort will be improved. It is recommended to consult a doctor in time to identify the cause of the heart discomfort and give timely treatment.