Rib fracture is usually the most painful within a week, because within a week is the hematoma absorption period, this time the fracture is not stable, a little movement or coughing, sneezing, or even bending movement, may be displaced, will stimulate the periosteum and lead to pain. With the prolongation of time, hematoma gradually mechanized, the fracture is gradually stabilized, and the pain is gradually reduced, usually in two weeks, the fracture will be more stable, and the pain will be significantly reduced. By one month the fracture has fibrous healing and the pain is largely gone. Of course, each person’s situation and the cause of the fracture is not quite the same, if it is a comminuted fracture, pathological fracture, the pain may be longer.