There are many causes of thoracic bone pain, such as rib lesions, sternal lesions, cardiopulmonary system lesions, thoracic vertebrae lesions, leukemia and so on. 1. Rib lesions: rib tuberculosis, rib tumors, etc., may cause thoracic bone pain, which is mainly caused by rib pain. 2. Sternal bone lesions: sternal trauma, sternal fracture, primary tumor of sternum, osteomyelitis, tuberculosis of sternum and other diseases may also cause thoracic bone pain. 3. Cardiopulmonary system lesions: angina pectoris, cardiac infarction, lung cancer, lung infection, pleurisy and other diseases may cause pain in the anterior region of the heart and lungs, and the pain may radiate to the chest position, thus causing thoracic bone pain. 4. Thoracic spine lesions: Thoracic spine tumor, thoracic spine tuberculosis and other diseases can also cause thoracic bone pain. 5. Leukemia: abnormal blood cells proliferate and infiltrate the sternum and ribs, which can also cause chest bone pain. There are many reasons for thoracic bone pain, it is recommended to go to the hospital in time after the appearance of symptoms, take standardized treatment according to the doctor’s instructions, do not ignore the symptoms, take it lightly, so as not to delay the condition.