There is some use in getting a rabies vaccine one month after being bitten by a dog. Dog bites may get rabies, from the dog bite to the onset of rabies for the period of time, for the incubation period of rabies, rabies incubation period of most of the 3 ~ 7 weeks. Therefore, one month after being bitten by a dog and then injected with rabies vaccine can still play a protective effect of immunity. However, the immune effect achieved by rabies vaccine injection after one month of dog bite is not as good as rabies vaccine injection within 24 hours of dog bite, the first vaccine injection is completed within 24 hours of dog bite, and then the rabies vaccine injection is completed in accordance with the requirements of the full amount of rabies vaccine. Therefore, it is recommended to go to the hospital immediately after being bitten by a dog.