A cut on the skin from a rusty wire usually does not require tetanus. In most cases, tetanus is an infectious disease caused by the tetanus bacillus, which develops in small, deep and contaminated wounds. If the skin is cut by a rusty wire, the tetanus bacillus will not be able to transform and multiply in shallow wounds, so generally there is no need for tetanus and the affected area can be sterilized. It should be noted that if the wound is deeper, cut the subcutaneous tissue, local skin discomfort symptoms, should go to the hospital in time for relevant diagnostic examinations, under the guidance of professional physicians combined with their own situation for targeted treatment, to avoid the impact on the health of the body.