After the smash, you can use elastic plastic film to wrap the smashed parts, can effectively reduce local bleeding, reduce swelling. Within 2 days of injury, you need to intermittent cold compresses, using a dry towel will be wrapped up in ice, placed on the most obvious parts of the swelling, pain, each cold compress time of about 20 minutes, every 2 hours cold compress 1. Intermittent cold compresses can occlude the bleeding capillaries, reduce bleeding, reduce swelling and relieve pain. Hot compresses are needed after 2 days of injury, using a hot towel on the swollen area to avoid burns. Hot compresses can promote local blood circulation, promote the recovery of injured soft tissues, and enhance the supply of local oxygen and nutrients. It is also important to actively improve the examination to clarify the exact extent of the injury. If surgery is indicated, surgical treatment should be actively performed. Conservative treatment should elevate the affected limb to avoid excessive drooping, and no pushing or massage.