After the foot sprain need to do the following treatment according to the condition: First, the simple emergence of pain, no obvious edema and limited activity, does not affect the normal walking, only need to rest, reduce the activity can slowly recover. Second, after the injury there is obvious edema, the foot can not land due to pain need to take a film to rule out the possibility of fracture, within 24 hours use cold water cold compress, reduce internal bleeding due to trauma, so as to improve the symptoms, 24 hours later bleeding will stop, then you can choose hot water hot compress, promote local blood circulation to accelerate the absorption of bruising slowly, so as to improve the pain, edema. Third, after the sprain, if there is an obvious deformity indicating the existence of fracture or dislocation, it is necessary to take x-ray films and decide whether to operate or to reset by manipulation with external fixation in plaster according to the performance of imaging.