When bitten by a rat, the rat itself may carry many kinds of bacteria and viruses, so you need to rinse the wound in time and take tetanus vaccine, hemorrhagic fever vaccine and rabies vaccine in time to avoid infection. After being bitten by a rat, the rat may carry certain bacteria or viruses left in the wound, you need to clean and disinfect the wound in time, rinse the wound repeatedly with water or soapy water in time, try to squeeze out the blood left in the wound, and then disinfect the wound with medical alcohol and iodophor. Early vaccination is recommended to prevent complications, including tetanus vaccine, hemorrhagic fever vaccine, because rodents are the main source of epidemic hemorrhagic fever, and rabies vaccine should be injected within 48 hours after the injury. If you are bitten by a rat, you need to consult a doctor in time and follow the doctor’s instructions for reasonable treatment.