Generally speaking, if the swollen ankle injury is caused by simple ligament injury, it usually takes 3 to 4 weeks to recover; if there is a fracture, it needs manipulation to reset or even surgery, which may take about 3 months to recover. 1. Simple ligament injury: when the ankle joint suffers a direct impact or sprain, the ligament is pulled beyond its tolerance capacity, ligament injury will occur. In the acute stage, rest should be given, the injured joint should be braked, weight bearing of the affected limb should be avoided, cold compresses should be given within 72 hours after the injury, and compression bandage should be applied to reduce the swelling. Generally 3 to 4 weeks can be basically back to normal. 2. Ankle fracture: it can be manifested as localized pain, swelling, activity disorder and other symptoms. According to the degree of injury, ankle fracture can be treated with non-surgical treatments such as manipulation, plaster fixation, and so on, while severe fracture requires surgical treatment. Complete healing of the fracture usually takes about 3 months to return to normal. It is recommended to seek immediate medical attention for further clarification of the cause of the ankle injury and targeted treatment.