The incubation period for tetanus is usually about 7 days, with a minimum onset of 1 day and a maximum onset of months or even years for patients. Tetanus is a disease in which Bacillus tetani multiplies in an anaerobic environment and produces exotoxins, resulting in a series of clinical symptoms in patients. The faster the onset of the disease, the worse the prognosis of the patient. Most patients will develop symptoms within 2 weeks after injury, i.e., they will have typical symptoms such as difficulty in opening the mouth and corneal recoil, while a very small number of patients will develop symptoms after months or years of removal of lesions or foreign bodies from the body. Patients do not develop lasting immunity after having tetanus, so they can become infected again and develop the disease. Although the incidence of tetanus is very low, about 1-2%, once it develops, the patient’s life is at risk. Patients can prevent the onset of tetanus by thorough debridement and active and passive immunization.