Depending on the severity of the cut, the treatment should be bandaged to stop bleeding, disinfected and sterilized, and in severe cases, sutured in the hospital. After the hand cut off a piece of skin, the first time should be compressed to stop bleeding, and then, if the cut off the skin area is small and superficial, you can use iodine to disinfect the finger, and bandage with gauze or dressings, and regular medication change treatment. If the skin is cut off larger and deeper, or there are tendons and other parts of the injury, you need to go to the hospital, through the doctor to disinfect, and then do the suture surgery and other treatments, and should be injected with tetanus under the guidance of the doctor, to avoid tetanus infection. It is important to avoid getting your hand wet during a hand injury. If the condition is serious, consult a doctor.