Tetanus is a specific infection often associated with trauma, and may occur in addition to a variety of traumatic injuries, such as small but deep stab wounds, firearm injuries, blind tube trauma, etc., and may also occur in mothers and newborns who give birth under unclean conditions. The germ of tetanus is Clostridium tetani, which is specialized anaerobic and gram-positive, usually exists in the intestinal tract of human and animals, and is excreted with feces, and is distributed in nature in the state of spores, especially common in soil. This pathogen is highly resistant to the environment and can withstand boiling. In addition, the main factor in the development of tetanus is the hypoxic environment. When trauma, Clostridium tetani can contaminate the deep tissues. If the external wound opening is small, and there is necrotic tissue in the wound or the filling is too tight, local ischemia, etc., it is easy to form a hypoxic environment suitable for the growth and reproduction of this pathogen. If aerobic bacterial infection is also present, the latter will consume the oxygen remaining in the wound, making the disease more likely to occur.