After a rusty nail sticks to your foot, you should go to the hospital for debridement treatment. On the one hand, because the wound may be contaminated by the bacteria and dust carried inside the rust, on the other hand, because the wound is deeper and belongs to a hypoxic environment, which is conducive to the growth of tetanus bacilli. Therefore, if you get a rusty nail in your foot, you should go to the hospital to actively treat it. The wound should be thoroughly debrided with hydrogen peroxide, then rinsed with saline, and finally locally coated with iodophor to disinfect and wrap sterile gauze. If it is a more serious wound, oral antibiotics should also be taken.