Chest pain is not necessarily cancer. For example, chest pain in the left precordial region that worsens after activity and relieves after rest is considered to have a high likelihood of pain due to cardiac causes, such as angina pectoris. There is also chest pain caused by intercostal neuritis, mostly bilateral quarter rib pain, which is generally tolerated by patients. Some of the pain caused by pleurisy is aggravated at the end of inhalation, that is, aggravated by deep inhalation, chest CT examination will find that the patient has a small amount of pleural fluid, the pleural friction can be heard on examination, the cause of the cause of the inflammation, then anti-inflammatory treatment, pleurisy subsides, chest pain will disappear. If the pleurisy is caused by tuberculosis, after anti-tuberculosis treatment, the pleurisy subsides and the chest pain disappears. However, if the patient’s chest pain is persistent pain, which is heavier at night, bone and chest CT examination is needed to check whether there is a possibility of malignant tumor. Therefore, chest pain needs to be diagnosed clearly based on clinical symptoms as well as blood tests and imaging tests to see if it is cancer and other diseases.