Rabies vaccine is used to prevent rabies. When a patient is bitten or scratched by a dog or other animal, the wound should be treated immediately by repeatedly rinsing with water or soapy water and then repeatedly disinfecting with iodine or alcohol. After treating the wound, seek medical attention promptly and the doctor will choose whether rabies vaccination is needed according to the degree of exposure: 1. Grade I exposure: If the patient is licked by an animal when in contact with the animal without breaking Skin, often judged as Grade I exposure, generally does not require treatment and does not need rabies vaccination; 2. Grade II exposure: If there is an unbleeding skin bite or scratch after an animal scratch or bite, but there are obvious teeth or claw marks, often suggesting Grade II exposure, patients are advised to treat the wound immediately and receive rabies vaccination in a timely manner according to post-exposure immunization procedures; 3. Grade III exposure: When a patient has one or more bleeding skin bites or scratches by animals, and when mucous membranes or broken skin are licked, rabies vaccination should be given immediately according to post-exposure procedures, and anti-rabies serum or rabies human immunoglobulin should be administered as prescribed by the doctor according to the specific situation. In addition, if the patient has been fully immunized within 3 months and is bitten or scratched by an animal, only the wound needs to be treated and no revaccination is required. If the injured animal has remained healthy during the 10-day observation period, immunization can be terminated. In the case of people who have frequent contact with animals, such as breeders and field workers, vaccination is required in advance.