Chest discomfort is related to the stomach, and patients suffering from stomach disorders may cause chest tightness, hidden pain in the chest and other uncomfortable symptoms. Most patients with bad stomach or with stomach diseases may be accompanied by excessive secretion of gastric acid and relaxation of cardia sphincter, which leads to easier reflux of gastric acid into the esophagus, thus inducing esophagitis. Since the main part of the esophagus is located in the sternal area, the patients may suffer from burning, pain and other manifestations of the sternal area. In addition, patients with gastritis, gastric ulcer and other diseases may experience stomach pain, stomach cramps, indigestion and other symptoms. When patients with gastric disease have an acute attack, the severe pain may radiate to the chest, resulting in hidden pain in the chest. At the same time, food stays in the stomach for a long time due to indigestion, which causes irritation to the stomach lining, and when the stomach body is overexpanded, it leads to a feeling of tightness and pressure in the chest, which is also accompanied by pain in some patients. Chest discomfort may also be associated with myocardial ischemia, coronary atherosclerotic heart disease and other diseases. It is recommended that patients seek timely medical examination to clarify the cause of the disease and then targeted treatment.