Norfloxacin can treat urethritis. Urinary tract infection is dominated by Gram-staining negative pathogenic bacteria, norfloxacin for Gram-negative, positive bacteria have a powerful killing effect, often used clinically to treat urinary tract infections. Due to the anatomical relationship, the urinary tract is located in the pelvic cavity, opening in the perineum, and close relationship with the digestive tract, prone to contamination by intestinal flora and cause infection. Norfloxacin is a quinolone antibiotic, a synthetic broad-spectrum antibiotic, alias haloperidol, which has antibacterial effects on Gram-negative and positive bacteria such as Escherichia coli, gonococcus and Staphylococcus aureus. Norfloxacin is useful in the treatment of both gonococcal urethritis and non-gonococcal urethritis infections of sensitive bacteria. After a clear diagnosis of UTI, medication can be administered empirically first, and quinolones such as norfloxacin can be used as an option, which can be adjusted appropriately according to the urine culture results. Generally speaking, norfloxacin is metabolized by the kidneys and absorbed a little better on an empty stomach. Recommended adult dose 3 times a day, once 0.2g, the course of treatment is generally one week, often after the symptoms are reduced or disappeared still recommended to continue to take oral for a week to avoid relapse. It is recommended to drink a lot of water while taking oral medication to avoid the formation of urinary crystals and reduce the occurrence of urinary stones. Norfloxacin is not recommended as treatment for women with abnormal kidney function, abnormal liver function or pregnancy, which may increase the liver and kidney load and lead to the possibility of fetal malformation. In summary, norfloxacin as quinolone antibiotics can treat urethritis, but also according to whether the pathogenic bacteria are sensitive to the appropriate choice, once the symptoms of urethritis, hospital visits for clear examination is a must.