After a foot sprain, within 24-48 hours after the injury, you need to apply cold compresses, cold compresses can make the local vasospasm, reduce the local excessive swelling. After 48 hours after a foot sprain, you can take hot compresses, hot compresses can increase local blood circulation, can reduce local swelling and soft tissue damage. In the case of a sprained foot, it is also necessary to go to the hospital to discharge the possibility of fracture, need to take X-rays as well as after a professional doctor’s examination. If there is a fracture in the case of the need for plaster external immobilization, because some ankle fractures require plaster external immobilization and surgical treatment, so do not take it lightly, to prevent delay, aggravate or delay the condition.