It is important to get a tetanus shot when the skin is scraped by iron, because Clostridium perfringens, which causes tetanus disease, is mainly found in high levels in clay and rusted objects. If a patient is cut by iron, regardless of the size of the wound and whether the iron is rusty or not, he should be promptly given tetanus drugs to prevent the appearance of the disease. Under normal circumstances, patients with wounds need to disinfect the wound in a timely manner, using iodophor to prevent wound infection, and then go to the hospital for tetanus vaccination. Tetanus is a more serious disease, the onset of which is often based on tonicity and is accompanied by respiratory distress. With the further development of the disease, patients can develop complications such as lung infections and fractures, which have a greater impact on their health. The main point to note is that if the patient’s wound appears to be small, but the wound is deep, it must be injected with tetanus vaccine, this kind of wound is easy to form an anaerobic environment breeding tetanus virus infection, because the tetanus virus in the anaerobic environment its chance of infection can be greatly increased.