Rabies can usually be ruled out in most patients who do not develop the disease within 1-3 months after a dog bite. However, there are very few patients with an incubation period greater than one year. Rabies is an acute infectious disease caused by human infection with the rabies virus after being bitten or scratched by an animal such as a dog or cat. There is an incubation period of tens of days to months after a dog bite until the onset of rabies, usually about 20-90 days. Some patients develop the disease in a week, and very few patients have an incubation period of more than a year. Therefore, after being bitten by a dog, patients are advised to take active preventive measures. If there is bleeding in the wound, you can squeeze the wound from the proximal end to exclude the dirty blood, which helps the dog’s saliva around the wound to flow out passively, and wash the wound thoroughly with 20% soapy water or water for more than 30 minutes, while going to the hospital for rabies vaccination to reduce the chance of rabies. In addition, since the lethality rate of rabies can reach almost 100%, patients who are bitten by dogs should be treated and vaccinated in a timely manner to avoid infection with rabies virus causing disease attacks.