Generally rabies vaccine should be injected within 24 hours, after a dog bite or bleeding, generally need to be inoculated within 24 hours after wound exposure, the faster the rabies vaccine is injected the better the effect. Most use the 5 shot injection method, but there are also 4 shots. The specific 4 or 5 shot injection method is related to the specific rabies vaccine, and the injection method may be different from manufacturer to manufacturer, so you can refer to the rabies vaccine instructions for injection. If the patient is bitten by a rabid dog, it is best to combine the rabies immunoglobulin injection if you want to have a better blocking effect. Immediately after being bitten, one should wash with soapy water for 15 minutes, disinfect the wound with iodophor or alcohol, and go to the local CDC or a hospital in a position to receive rabies vaccination as soon as possible.