The bone next to the sternum is painful for several common reasons: First, rib fracture: a direct impact on the ribs can cause a fracture, with significant local pain, swelling, and restrictions on breathing and degree of activity, and a fracture line may be detected by taking an X-ray. If the location is good, the fracture line is not easily detected and a 3D CT examination is required. Second, inflammation of rib cartilage: it can be caused by viral infection or strain, both of which can lead to swelling and pain of the bone next to the sternum, as well as respiratory dysfunction, and the patient will have a localized increase in skin temperature, and painful symptoms will increase when pressed. Early diagnosis and treatment can provide rapid relief of parasternal bone pain. Patients should prevent trauma and protect parasternal bones and cartilage to avoid fractures and serious strain injuries.