Ankle fracture are swollen, ankle fracture is because of violent sprains are most common, can also be caused by smashing or falling, etc., the external force that caused the fracture are relatively large, will also be accompanied by soft tissue and ligament damage and contusion in the ankle area, there is bruising and small blood vessels, small lymphatic vessels damage, can cause swelling and bruising. Sometimes when the ankle is fractured, the opposite side of the ankle will be swollen very badly. The tissue in the ankle is relatively loose, and the swelling will be more serious due to bleeding and bruising. After the swelling, we need to check in time, not only to exclude the fracture, but also pay attention to whether there is blood vessel damage, whether there is ligament damage, after the swelling, we need to elevate the affected limb, immobilize it, check the fracture crushing is serious, but also need surgical treatment.