Elevation of the affected limb after a fracture is mainly to promote venous and lymphatic return of the limb, thus preventing further aggravation of swelling, and also promoting the further reduction of swelling and pain. Elevation of the affected limb is divided into active elevation of the affected limb and passive elevation of the affected limb, passive elevation of the affected limb is 1-2 pillows under the affected limb, or the angle of the affected limb away from the bed surface is 30-40 ° is the best. If the affected limb is actively elevated, elevation of the affected limb during functional exercises when the fracture end is relatively stable can not only promote lymphatic and venous return, but also avoid muscle wasting atrophy and promote muscle contraction.