There are three main sensations of bone fracture: first, painful sensation, as a result of external collision stimulation leads to bone fracture, resulting in more obvious pain, and the soft tissues around the bone fracture will also be more affected by bruising or edema, resulting in obvious pain symptoms. Second, local swelling, because the formation of bone fracture will lead to soft tissue and bone damage, resulting in more bruising, and the gradual increase of bruising will lead to significant local swelling. Third, unfavorable activity, after the formation of the bone fracture will often be restricted, but also able to carry out relatively slow-motion activities, when the activity force is relatively large may lead to the aggravation of the bone fracture and fracture situation, resulting in pain and unfavorable activity situation more obvious, after this situation requires external fixation of plaster, keep the position of the bone fracture is not further stimulated, and ensure the alignment of the broken end, alignment The healing process can be effective only if the fracture is well aligned and aligned.