A little bit of blood from a skin scratch by a cat may carry the risk of rabies virus infection, and the patient needs to seek medical attention for rabies vaccination in a timely manner. As cats are also one of the susceptible hosts of the rabies virus, the chances of cats carrying the virus in their bodies are also relatively high, and when a patient bleeds after being scratched by a cat, it may easily lead to infection of the wound with bacteria or rabies virus. The patient should flush the wound with water or soapy water, or disinfect the affected area with iodophor, hydrogen peroxide and other disinfectants, and go to a regular epidemic prevention institution for rabies vaccination. If the cat belongs to the domestic pet cat, it should also be vaccinated on time every year. Patients should avoid touching water at the needle eye after vaccination, avoid drinking alcohol and strong tea during the vaccination period, and eat less spicy and stimulating food, as well as monitor their own condition and seek medical attention if there is any abnormality.