Six months after being nailed, the soles of the feet are infected with pus, and there is also a certain risk of contracting tetanus, which has an incubation period of up to several years before it strikes, but the chances are small. The first thing you need to do is to treat the local wound, then carry out the preventive treatment of tetanus, and then you need to change the medicine and other treatments regularly until the wound heals. If the sole of the foot is infected with pus half a year after being stabbed by a nail, it is generally considered that there is a small amount of foreign matter in the tissue of the injured area, and when the body’s immune system declines, the tetanus bacillus remaining in the foreign matter may reproduce in large quantities, leading to the occurrence of tetanus symptoms. Therefore, it is necessary to thoroughly debride the injured wound and change the medication regularly to prevent infection (e.g., taking antibiotics such as amoxicillin) and to inject tetanus antitoxin at an early stage to prevent tetanus. When there is a history of trauma and symptoms of muscle spasms, such as biting muscle spasms, back muscle tension, etc., it is necessary to consider whether there is a tetanus infection, and go to the hospital in a timely manner, and follow the doctor’s instructions to be examined, treatment, so as to avoid delays in the condition of the patient.