Patients who are inadvertently bitten by dogs can show different symptoms according to the severity of the bite: a. If the patient is bitten by a dog to a lesser extent, it can be accompanied by local redness, swelling, pain and a small amount of bleeding at the bite marks. Patients need to be disinfected with vital iodine and hydrogen peroxide as soon as possible, and go to the hospital to inject tetanus rabies vaccine to prevent tetanus and rabies virus infection. Through the local external application of vital iodine gauze, the patient’s symptoms of swelling and pain can be relieved more quickly. Second, if the dog bite wound is more serious, it can be accompanied by large skin lacerations, rupture of arteriovenous vessels, which can be accompanied by active bleeding, significant local swelling, elevated skin temperature, accompanied by significant pain. Patients need to go to the orthopedic department of the hospital as soon as possible, and local debridement treatment will be performed under brachial plexus anesthesia or general anesthesia. Postoperative anti-infection, analgesia, and edema are strengthened, and tetanus or rabies vaccination is also required to prevent infection.