Swelling after fracture surgery is caused by the restriction of limb activity after surgery, which leads to poor venous return, as well as the local tissue damage caused by the surgery. It is recommended to elevate the affected limb and treat it with local hot compresses and physiotherapy, and at the same time, you can also take medicines that activate blood circulation and eliminate blood stasis to promote swelling. Some patients may also be caused by the tightness of the external plaster cast, which can be determined by observing the peripheral circulation of the limb, and if this is the cause, it is recommended to re-fix the plaster cast. In addition, it is necessary to consider whether the swelling is caused by the complication of infection, if it is caused by infection, in addition to swelling, at the same time, the local area will also show obvious redness, heat, pain and other symptoms, it is recommended that under the guidance of a professional doctor in a timely manner to be anti-infective treatment.