The function of elevating the affected limb after fracture is to promote the venous and lymphatic return of the limb, thus preventing further aggravation of swelling, and also promoting the further reduction of swelling and pain. The passive elevation of the affected limb is to put 1-2 pillows under the affected limb, or the angle of the affected limb from the bed is between 30-40° is the best. In the case of active elevation of the affected limb, elevation of the affected limb during functional exercise with a relatively stable fracture end will not only promote lymphatic and venous return, but also prevent muscle wasting atrophy and promote muscle contraction.