Hands are the tools of our labor, so in the process of labor once the hand injury, due to the fear of people as well as the lack of good professional knowledge, and a lot of incorrect treatment methods and lead to secondary injury of the hand. Once the hand injury occurs, first of all should keep calm. If the machine is injured, should immediately cut off the power supply of the machine, disassemble the machine to take out the injured hand in the state of shutdown, do not reverse the machine. If the injured hand appears broken skin bleeding, a single finger can pinch both sides of the finger to stop bleeding, more fingers should be clean clothing bandage, can not use toilet paper, quicklime, matchbox paper, a class of pollutants bandage. Do not use toilet paper, lime, matchbook paper and other contaminants. Do not use rope to stop bleeding. The severed finger should not be discarded to avoid missing the chance of reimplantation, nor should it be immersed in any liquid. It should be sent to a specialized hospital for treatment as quickly as possible, and it is best to contact the hospital well in advance for pre-operative preparation and early surgical treatment.