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Usage of tourniquet ligation method rubber tourniquet: left hand holding rubber belt, about 16 cm behind; right hand tightening ring body ligation, front hand to left hand, middle index two fingers, pulling down along the limbs, inserting in the front ring, to ensure not loosening. In case of massive hemorrhage of extremities, tourniquet is needed and there is no rubber tourniquet on site, local materials can be obtained, such as cloth tourniquet, thread or hemp rope. When using cloth tourniquet to stop bleeding, put in a flat ring and tighten and fix it. When using rope or hemp rope to stop bleeding, it can be tightened and fixed.