Levofloxacin hydrochloride injection is indicated for moderate to severe infections caused by sensitive bacteria, such as infections of the respiratory system, infections of the urinary system, infections of the genital system, infections of the skin and soft tissues, and infections of the intestinal tract, as follows: 1. Infections of the respiratory system: such as acute bronchitis, acute attacks of chronic bronchitis, diffuse bronchitis, bronchiectasis co-infection, pneumonia, tonsillitis; 2, Urinary system infections: including pyelonephritis, simple cystitis, and complicated urinary tract infections; 3. Reproductive system infections: such as acute prostatitis, acute epididymitis, uterine infections, uterine adnexitis, and pelvic inflammatory disease; 4. Skin and soft tissue infections: such as subcutaneous abscesses, perianal abscesses, and cellulitis; 5. Intestinal infections: such as bacterial dysentery, infectious enteritis, typhoid fever, and paratyphoid fever; 6. Other infections: treatment of various other infections in leukemia, granulocytopenia and immunocompromised patients, including mastitis, trauma, burns and post-surgical wound infections, abdominal infections, cholecystitis, cholangitis, osteoarthritis and other infections.