The main causes of protruding chest bones usually include calcium deficiency, deformed healing of chest bones, and osteophytes of the sternum, which require prompt medical attention once detected. If the growing children are in the state of calcium deficiency for a long period of time, it may cause diseases such as chicken chest or bead chest, resulting in obvious protruding chest bones, and then it is also easy to lead to the development of thoracic deformities, which will affect the respiratory function. If trauma occurs, especially the deformed healing of thoracic ribs after trauma, it will usually cause protrusion of thoracic bones; elderly people are prone to bone degeneration in the thoracic area, and the degenerated thoracic bones may develop osteophytes, which will cause obvious protrusion of thoracic bones. In severe cases, it is recommended to actively seek medical advice and follow the doctor’s instructions for examination and treatment.