After being bitten by a dog and not receiving rabies vaccine at the time, the remedy 10 years later is still the full rabies vaccination. The incubation period for rabies is mostly within 3 months, with rare cases of onset after 1 year and rare cases reported after 10 years. Currently, the longest reported incubation period for rabies is 19 years. Therefore, after a dog bite, the possibility of onset after 10 years cannot be ruled out, and it is best to receive rabies vaccination throughout. Especially for patients with psychological burden, it is necessary to inject rabies vaccine, which can psychologically relieve the tension and relax after the injection. In general, within 20 years after being bitten by a dog, the rabies vaccine can still play an immunizing role to a certain extent, as long as there is no clinical development. Because the rabies virus, after infection, first multiplies in the muscle tissue around the wound and does not invade the nervous system, it generally does not cause morbidity. At the stage of virus multiplication in muscle tissue, if the body has produced rabies virus antibodies, it is possible to play a role in neutralizing the virus and preventing morbidity. However, if the bite is serious and the vaccine is injected after 48 hours, it may not play a role in preventing the disease, because a few patients have a short incubation period, the shortest being 4 days after the dog bite, and the vaccine cannot play a role in preventing the disease even if it is injected within 48 hours. Therefore, it is generally recommended that vaccination be given as soon as possible after a dog bite, and the shorter the time the better, especially for severe wounds, bites on the head, face, fingers and other parts of the body with rich nerve distribution, the vaccine should be given as soon as possible, and the maximum time should not exceed 24 hours, while bites on other parts should preferably not exceed 48 hours. If you do not have the conditions to inject within 48 hours, even if it is more than 48 hours, you are required to inject.