There are the following reasons for the pain in the middle bone of chest, first, excessive exercise, after a lot of exercise will lead to intercostal nerve and muscle damage in the chest, proper rest, you can also carry out acupuncture, massage and other physical therapy. Second, fracture, first go to the hospital for chest radiographs, to determine the fracture, can be used externally with ointment to activate blood stasis to relieve pain, pay attention to rest, appropriate nutrition and calcium supplement, if necessary, surgical treatment. Third, may be due to pleurisy, do not carry out strenuous exercise, with anti-inflammatory and analgesic drugs.