The left side of the chest has the left lung as well as the heart, and below them are the stomach and pancreas and spleen. Any abnormality in these areas needs to be specifically analyzed in the context of the patient’s symptoms. If the patient has nausea and vomiting with acid reflux, belching and abdominal distension, gastritis or gastric ulcer is considered, and gastroscopy is recommended to clarify the diagnosis. If the patient has symptoms such as coughing, coughing sputum, chest pain, dyspnea and fever, consider pneumonia or pleurisy, and suggest doing chest X-ray and lung CT examination to clarify the diagnosis. If the patient has palpitation, chest tightness and paroxysmal chest pain, consider angina pectoris or acute myocardial infarction in coronary heart disease. An electrocardiogram and myocardial enzyme profile are recommended. If the patient has bleeding spots as well as hematologic disorders, the spleen needs to be examined. If the patient has epigastric pain as well as nausea, vomiting and abdominal pain after binge drinking or overeating, it may be due to pancreatitis. The presence of abnormal symptoms in these areas requires a comprehensive analysis and appropriate ancillary tests to clarify the diagnosis.