Immediately after being bitten by a mouse, the bitten area should be flushed with plenty of running water or soapy water for at least 15 minutes, while the wound can be gently turned over for multi-directional flushing and hand protection measures taken if necessary. After simple treatment it is best to avoid applying medications on your own to avoid influencing the doctor’s judgment and to go directly to the hospital for wound assessment of the affected area and for relevant vaccinations. Depending on the severity of the wound, suturing or dressing may also be required. After first aid treatment, if fever, chills and other abnormalities occur at a later stage, it is recommended to seek medical attention in a timely manner so as not to delay the condition. I. Vaccination: When the rat bite wound is deep, you need to inject tetanus vaccine, epidemic hemorrhagic fever vaccine, etc., if necessary, you can also be vaccinated against rabies. Second, suture dressing wounds: after being bitten by rats, if the wound is deep and large trauma, it is recommended to promptly seek medical attention for wound suturing to help the wound heal, reduce scarring and avoid affecting the aesthetics. Third, deal with complications: usually not recommended after being bitten by rats to deal with their own wounds, because wild rats may carry viruses and spread a variety of diseases, common are renal syndrome hemorrhagic fever, leptospirosis, etc., when the clinical symptoms of these diseases, should be promptly to the hospital for treatment or isolation. 1, renal syndrome hemorrhagic fever: is a common disease of rodent transmission, clinical manifestations are mainly fever, body aches The clinical manifestations mainly include fever, generalized soreness, upper body skin reddening, etc. The performance is more similar to that of drunkenness, and is also accompanied by extensive skin bleeding spots, and the volume of urine is first less and then more, with more obvious characteristics. Since the main cause is viral infection, there is no special medicine for the time being, so the main treatment is isolation and symptomatic support, such as fever can be treated with antipyretic drugs, and at the same time give ribavirin and other antiviral drugs, while for serious bleeding, blood transfusion and rehydration can be timely. If the kidney function is seriously damaged, such as oliguria, intravenous mannitol, or diuretics such as furosemide can be used to relieve, if necessary, dialysis treatment, and reported as a category B infectious disease, closely observe the vital signs; 2, leptospirosis: the main manifestations are fever, muscle pain, lymph node enlargement, in addition to cough, cough, hemoptysis, impaired consciousness and other multi-organ damage. Treatment is based on medication, and those with mild cases can apply azithromycin orally, while those with severe cases can inject penicillin and cephalosporin intravenously. Patients need bed rest, a high-calorie liquid diet, and close monitoring of vital signs; 3. Other: Lyme disease and plague can also be transmitted, but such diseases have been controlled by many parties and are relatively rare in clinical practice, so they are not overly described.