As an emergency treatment for ankle sprains, the RICE principle has become a classic: 1, Rest (Rest) to stop walking and let the injured part rest to reduce further damage; 2, Ice (Ice) to let the temperature of the injured part decrease, reduce the inflammatory response and muscle spasm, relieve pain and inhibit swelling. Each 10-20 minutes, more than 3 times a day, pay attention not to directly apply ice to the affected area, available wet towel wrapped in ice to avoid frostbite. Apply ice only within 48 hours after the injury. Compression Wrap the injured ankle joint with an elastic bandage and apply appropriate pressure to reduce swelling. Be careful not to apply excessive pressure, otherwise it will increase the swelling and ischemia of the limb far away from the wrap. 4.Elevation Elevate the limb above the heart to increase venous and lymphatic return, reduce swelling and promote recovery.