After a fracture, in addition to the proprietary signs of fracture such as deformity, paradoxical activity, bone rubbing sound and bone rubbing sensation, there will be swelling at the fracture site, which is the normal reaction of the body to the bone. This is a normal reaction of the body to the bone. When these conditions occur, the following treatments are taken: 1) elevate the limb; 2) wrap the entire lower limb with an elastic bandage to prevent further development of swelling; 3) apply cold compresses to reduce the appearance of swelling; 4) reduce the degree of swelling by intravenous infusion of mannitol or oral administration of Mazeline, all of which are effective treatment measures.