It is often found clinically that a dog bite, but no bleeding, localized redness and swelling, should also be promptly treated accordingly at the hospital. Because this situation may be contaminated by saliva after causing local infection, and even the possibility of complications of rabies, it is best to go to a regular hospital within 24 hours for a detailed and careful examination, take local hydrogen peroxide or iodophor disinfection, and apply antibiotics for symptomatic treatment if necessary. However, it is clinically recommended to prevent rabies by injecting rabies vaccine. Rabies is caused by the pathogenic virus contained in the saliva of the diseased animal, which enters the body through the bloodstream after the bite, leading to the occurrence of rabies. For small wounds, although it is not clinically possible to distinguish them completely, it is possible to achieve complete prevention by timely injection of rabies vaccine, which is more beneficial to patients to reduce the risk of infection and prevent the occurrence of rabies.