When a child is bitten by a dog and breaks the skin, the first thing to do in this situation is to determine whether or not the dog is likely to carry the rabies virus. If the dog has been vaccinated regularly against rabies, there is no need to worry about rabies transmission to humans. If the dog has not been vaccinated regularly against rabies and there is no other way to ensure that the dog does not carry the rabies virus, certain precautions should be taken for small children. Bitten through the skin is generally not bleeding, belong to the second level of exposure, need to let small children to the vaccination station in time to inject rabies vaccine, the overall need for injection of five injections, some vaccines only need to be injected four injections, injection of the entire rabies vaccine, the small children’s body will be able to produce against the rabies virus neutralizing antibodies, so as to ensure that they will not be infected with rabies. If blood or bleeding can be seen where the bite has broken the skin, this should be a tertiary exposure and rabies human immunoglobulin should be injected at the same time.