Tetanus shot is tetanus antitoxin. Main components: essentially belongs to the immunoglobulin class, belongs to the gastric enzyme treatment of equine tetanus. The production of the first tetanus toxoid infected horse, when the horse produces specific antibodies to the horse’s plasma extraction, and then digested with gastric enzyme purification. Classified as a liquid antitoxin globular protein, it has the effect of neutralizing tetanus toxin. It is mainly used for the prevention of open trauma, especially when the wound is deep and heavily contaminated, which is highly susceptible to Clostridium tetani infection. There are two routes of inoculation; subcutaneous injection is given at the upper arm deltoid muscle attachment, and intramuscular injection should be given in the middle of the upper arm deltoid muscle or the upper outer part of the gluteus maximus muscle. Inoculation of the drug may cause adverse reactions such as convulsions, coma, vomiting, diarrhea and high fever, and is contraindicated in people who are allergic to the product. If a positive allergy test occurs, it should be used with caution or the desensitization injection method should be applied. After inoculation, the patient should remain at the site of inoculation for 30 minutes.