Tetanus shot should be decided according to the specific circumstances, it is recommended that under the guidance of a physician to determine whether the need to play, generally easy to form an anaerobic environment of the wound need to play, the wound is small, superficial need to play. Tetanus bacillus is a kind of anaerobic bacteria, only in the anaerobic environment can survive, if the rusty nail puncture wound, the wound is deeper, or there is a serious burns, the local formation of anaerobic environment, you need to play tetanus. If the wound is small, such as a scratch by an iron nail, it is not easy to form an anaerobic environment, you do not need to fight. Symptoms of tetanus include a bitter grimace and difficulty breathing, which can be life-threatening in severe cases. When the injury is serious and the wound is deep, if there is a foreign body in the wound, you need to go to the emergency room to remove the foreign body, rinse and disinfect the wound repeatedly, keep the wound clean and dry, and get a tetanus shot at the same time.