Bones in the middle of the chest can be seen in normal people, but may also be caused by fractures, costochondritis, such people should consult a doctor in time to clarify the cause of the disease. 1. Physiological conditions: normal people may be due to the gap between the bones is relatively large, friction with each other to produce the middle of the chest bone popping sound, generally do not have movement disorders, without special treatment. 2. Fracture: if the patient in the middle of the sternum bone click popping before the occurrence of a fall, collision history should be considered to be fracture caused by such patients will also have localized redness, swelling, pressure and pain, should consult a doctor in a timely manner, for appropriate treatment. 3. Costal chondritis: the cartilage at the junction of the sternum and ribs has an inflammatory reaction, and the patient will have symptoms such as pain, chest middle bone clicking, localized bulging, etc., which should be treated accordingly under the guidance of the doctor.