After being bitten by a pet rat, you can wash the skin locally, take anti-inflammatory drugs selectively under the advice of a doctor, and receive rabies vaccine and tetanus vaccine if necessary. After being bitten by a pet rat, we should observe the skin condition of the bite wound in time, if the wound is shallow and the skin is not broken, we can use running water, saline, soapy water, etc. to clean the skin of the bite wound, and disinfect the wound with medical alcohol and iodine volts. If the skin is broken, or there is a small amount of blood seepage, in addition to cleaning the wound, should also be under the advice of the doctor selective taking anti-inflammatory drugs, or topical application of erythromycin ointment, etc., to avoid making the wound appear infected. If the wound is deeper, the deeper part of the wound may cause secondary infection, as a precautionary measure, you should go to the hospital in a timely manner under the guidance of the doctor to inject broken rabies vaccine and tetanus vaccine. If symptoms of physical discomfort occur, go to the hospital for examination and active treatment, and do a good job of daily self-protection to avoid wound infection.