The hand is cut by the knife should be disinfected and bandaged in time to stop bleeding, and then go to the hospital in time for treatment. 1. Patients must go to the hospital in time for proper treatment, after the fingers are cut by the knife, first of all, use a lot of water to flush the bacteria in it, to prevent bacterial infection around the wound wound, and then also need to disinfect the wound with hydrogen peroxide, which can prevent anaerobic infections, such as Clostridium tetani and other bacteria. 2. There are big and small knives, wounds also have depth, some patients with deep wounds also need to go to the hospital for stitches to stop bleeding and bandage treatment can make the wound heal faster, but also a certain degree of hemostasis and to achieve the effect of wound closure, the scar will not be very obvious. 3. In the wound healing period patients also need to pay attention to diet, can not eat spicy and greasy food, you can eat more vitamin-rich fruits and vegetables can be appropriate to increase the intake of protein and vitamins. If the wound is too deep, it is recommended to go to the hospital in time for professional wound dressing treatment, to avoid bacterial infection, timely injection of tetanus.