Sternal depression is mainly associated with trauma, congenital deformity of the sternum or funnel chest caused by congenital developmental abnormalities. If the sternum is impacted by an external force causing a depressed sternal fracture, the symptoms of sternal depression may appear, mostly accompanied by pain and a clear history of trauma. Congenital chest wall disease can cause sternal depression, manifested as the sternum of the anterior chest wall localized inward depression symptoms, clinically known as funnel chest, mild sternal depression can be no discomfort symptoms, serious sternal depression can be on the trachea, lungs, heart and other thoracic organs to produce pressure. If the symptoms of sternal depression appear, it is recommended to consult the doctor in time, improve the chest CT, thoracic three-dimensional CT and other examinations, after a clear diagnosis and active treatment, so as to avoid delaying the condition.