The foot sprain, the current situation is localized purple changes, considered to be a phenomenon of bruising after the spread of changes in the soft tissue, this situation is also a sign of the disease tends to improve. In the acute stage, ice should be applied to reduce local blood circulation and to reduce swelling and pain. Also, the foot or lower extremity should be elevated because it can promote local venous blood flow and reduce swelling. Anti-inflammatory drugs and drugs to improve microcirculation should also be given during the acute phase, both of which can promote gradual improvement of symptoms. If the pain and swelling increase, this is a sign of aggravation.