Sternum center pain will sound when you lift up the chest, usually consider sternum aseptic inflammation, old injury or joint dislocation. 1. Aseptic inflammation: If there is aseptic inflammation in the small joints of the sternum such as sternoclavicular joint or rib-thoracic joint due to strain injury, it will easily cause pain in the middle of the sternum in the anterior side, which will cause pain and sound when breathing and lifting up the chest. 2. Stale injury: If there is stale injury in the sternum, and the recovery is not good, the bone quality becomes thin and loose, and it is easy to have localized bone discontinuity or slight fracture, which will cause pain and noise in the process of activity. 3. Joint dislocation: If the sternoclavicular joint is dislocated, the small joints of the thoracic spine are dislocated, and at the same time, there are other peripheral lesions such as periarthritis, there may also be pain and noise when lifting up the chest. In short, the middle of the sternum pain in the chest when you lift the chest, the causes are complex, if the symptoms are obvious and affect the life, you should consult a doctor for a clear diagnosis in a timely manner.