The rat bites and bleeds, and needs to be rinsed and disinfected locally as soon as possible, and vaccinated if necessary. 1. Local rinsing: after being bitten by a mouse, you need to rush to rinse with water or wash with soap and water, the purpose is to clean up the mouse’s saliva and other impurities, in order to prevent secondary infections. 2. Local disinfection: Afterwards, local disinfection treatment can be applied externally with iodophor, disinfectant alcohol and so on. 3. Vaccination: After being bitten by the rats, if the wounds are deeper and bleed more, it is easy to spread the virus and cause hemorrhagic fever, which makes it necessary to be vaccinated. Currently there are bites by rats, and bleeding more, should promptly consult a doctor, and targeted treatment under the guidance of a professional physician. For patients with relatively large trauma, it is necessary to carry out suture bandage.