The causes of heart fossa discomfort are more varied and may include heart disease, gastroesophageal reflux disease, peptic ulcers, and hepatobiliary disease. The cardiac fossa in medical terminology refers to the subxiphoid process. The organs adjacent to this area are the heart, lower esophagus, stomach, gallbladder and left lobe of the liver, so disorders of these organs can cause discomfort. Diseases that may be associated with heart fossa discomfort are as follows: 1. Cardiovascular system diseases: coronary heart disease (angina pectoris, heart attack, etc.) can cause myocardial ischemia and hypoxia, causing heart fossa discomfort. Infectious diseases such as myocarditis and pericarditis may also cause discomfort in the cardiac fossa. If angina pectoris is present, rest or nitroglycerin can relieve the discomfort. Viral myocarditis may be preceded by a history of upper respiratory tract infection, and arrhythmias are common. Symptoms of pericarditis are associated with breathing, coughing, body position or swallowing. Further diagnosis of cardiac problems can be made by cardiac enzymes, troponin, electrocardiogram, echocardiogram, coronary CT, cardiac MRI or coronary angiogram. 2, digestive system diseases: organs such as the gastroesophagus and gallbladder are close to the heart area, so lesions in these organs may also cause the feeling of discomfort in the heart sockets. Gastroesophageal reflux disease, peptic ulcers and biliary tract disorders can all cause discomfort in the heart. Gastroesophageal reflux disease is caused by reflux of gastroduodenal contents into the esophagus, causing discomfort. It is often accompanied by acid reflux and a feeling of heartburn, which is worse when lying down or when abdominal pressure is elevated. Peptic ulcers often occur in the stomach and duodenum, and patients generally complain of epigastric pain, which has also been expressed as discomfort in the cardiac area. However, digestive disorders are not significantly related to exertion, but are influenced by feeding and antacid therapy, among others. Upper abdominal discomfort is also caused by lesions in the left lobe of the liver or gallbladder lesions. It can be clarified by barium meal examination, gastrointestinal endoscopy or ultrasound and other examinations. 3, psychosomatic factors: cardiac neurosis and psychological factors. Cardiac neurosis and psychological factors can be considered under the circumstance that no clear cause can be found after careful examination. Due to the location of the heart fossa organs more, patients should not diagnose themselves with medication based on symptoms alone, it is recommended that regular hospital consultation.