Paper can cut through the hand, there are 2 influencing factors: paper is very thin, paper and skin contact area is small. When the paper at a very high speed across the finger, due to the finger and skin contact area is small, not much pressure can produce a lot of pressure, the sharpness of the paper at this time can be comparable to a knife cut, and the finger skin is relatively thin, it is very easy to be cut. Normal life should pay attention to the protection of the skin, because the paper may be attached to a variety of bacteria, so after being cut, you need to disinfect the treatment as soon as possible, paste band-aid to protect against infection. If the wound is found to be deep and large, it must be timely to the regular hospital, timely treatment, and tetanus antitoxin injection to prevent tetanus.