A torn ankle ligament may swell for about a week, depending on the extent of the ligament tear. Patients with torn ankle ligaments experience localized swelling due to rupture of capillaries at the site of injury, causing bleeding. Patients need to apply cold compresses, such as ice packs, to the affected area, so that the blood vessels constriction, play a role in reducing swelling. The swelling of the torn ankle ligament will gradually decrease in a week or so. If the ankle is completely torn, ligament repair surgery will be required, and the swelling time will be relatively longer. Avoid flexion, extension and weight-bearing activities in the ankle joints to prevent swelling and pain from worsening due to over-activity. Keep warm and avoid getting cold to avoid spasms in the injured tissues. In addition to swelling, ankle ligament tears may also cause pain when moving, etc. When the above symptoms occur, it is recommended that the patient go to the hospital in time, under the guidance of the doctor for treatment, so as not to delay the condition.