Rabies virus needs a carrier to survive in the air, and if there is no carrier it will inactivate in about 2 minutes; if there is blood and saliva as carriers, the virus will also inactivate as the carrier dries up. Rabies virus is mainly transmitted through contact with body fluids, such as saliva and blood. Generally such viruses use cats and dogs as intermediate hosts, and humans are easily infected after being bitten or scratched by such animals. Rabies virus is an anaerobic virus that cannot survive for a long time in oxygen-filled air, and its presence generally requires blood or saliva as a carrier. However, even with a carrier, its survival time will die as the carrier dries out, and it will not survive without a carrier after leaving the body. Under laboratory conditions, the virus can die in 2 minutes if the air temperature is kept at 100°C. If the temperature is -7°C or in a freeze-dried state, it can survive for a long time. Bites or scratches from cats and dogs should be promptly injected with rabies vaccine to interrupt the virus infection in time to avoid serious consequences.