Chest pain can be seen in stomach disease, heart disease, lung disease and so on. 1. Stomach diseases: including gastritis, gastric ulcer, gastric hemorrhage, gastric cancer, etc., all of which have pain symptoms. Since the stomach is located in the lower part of the chest, the center of the left side of the position, the pain caused by gastric diseases can be manifested as pain in the chest socket. 2. Heart diseases: such as angina pectoris, coronary heart disease and other episodes of pain in the chest socket. 3. Lung diseases: including lung infarction, primary lung cancer, spontaneous pneumothorax, etc., all of which can lead to pain in the chest socket, and need to be further diagnosed by lung CT, biopsy and so on. As the causes of chest pain are many, it is recommended to consult relevant doctors in time, make a clear diagnosis based on symptoms, signs, medical history and relevant auxiliary examinations, and take corresponding treatment measures in time to avoid delaying the condition.