How long it takes to reduce the swelling of ankle fracture depends on the condition: 1, simple ankle injury: can be treated by early icing, later swelling, generally within 3-5 days, can achieve the purpose of swelling and pain; 2, accompanied by part of the ankle ligament injury: tear fracture of the articular joint bone, including ligament rupture, vascular and nerve injuries, it is recommended that the patient to carry out a simple immobilization, probably in 2-3 weeks, before being able to carry out appropriate functional exercise; 3, accompanied by severe ankle ligament injury, or even avulsion fracture: consider hospitalization to receive surgical treatment, and the time to reduce the swelling may take even longer.