Rabies is transmitted to humans through moving saliva after being bitten by a rabid animal. The incubation period of rabies virus varies from ten days to several months, but the clinical observation is thirty to sixty days, and three months may be relatively safe if there is no obvious attack of rabies symptoms. But patients with potential exposure to rabies or dog bites must not be able to take it lightly, should be cautiously taken after the injury for rabies vaccination, the routine application of five injections for the entire active immunization, more effective and safe prevention of rabies, pay attention to the observation period once the symptoms appear, must be timely to the hospital.