If the patient feels pain in the back, along with the heart fossa, the following points should be considered: First, the patient is considered to have a cardiogenic disease, such as coronary angina, or myocarditis or pericarditis, when the patient will experience pain due to ischemia, stenosis, and spasm of the coronary arteries. Secondly, different degrees of myocardial diseases, which also cause ischemia and hypoxia in cardiac muscle cells, will also cause pain in the above mentioned areas. Third, diseases of the respiratory system, in the case of large pneumothorax, pleurisy, pleural effusion, there will also be pain in the back and heart fossa. Fourth, pneumothorax due to various factors will also have pain of different degrees at the above mentioned locations. Fifth, if the patient has intercostal neuralgia, or herpes zoster and other factors leading to pain, there will also be pain at the above mentioned locations. Sixth, for patients with cardiac neurosis, they will also have this symptom when there is a disorder of plant nerve function.