Rinse the wound as soon as possible with water contaminants, then clean and dry towels and other items wrapped compression wound to stop bleeding, try not to self medication, (if the wound is relatively large or severed), keep the wound clean, if there is a limb severed, need clean plastic bags for severed limbs, do not soak with water and disinfectant water, placed in the ice box for preservation, such as wrapping compression hemostasis effect is not good can be used in the proximal upper arm tourniquet to stop bleeding, (one hour must be released tourniquet for ten minutes, otherwise reversible ischemic injury. (The tourniquet must be released for ten minutes at one hour, otherwise irreversible ischemic injury will occur.) The open injury must be treated within six hours after the injury, and the broken finger can be replanted within six to seven hours after the injury.