Usually, a woman’s urinary tract infection can be transmitted by a man or caused by her own infection. 1. Urinary tract infections can cause cross-infection during sexual activity. Especially special pathogens caused by urinary tract infections, such as gonococcal urethritis caused by gonococcus, mycoplasma, chlamydia caused by nongonococcal urethritis, which in the process of sexual activity, resulting in the phenomenon of mutual infection of both men and women. 2. There is also a part of self-infection, such as sedentary, low water intake, do not pay attention to hygiene and other habits, can cause gram-negative bacilli, gram-positive bacteria, enterococci, Aspergillus, Klebsiella bacteria, and other bacteria in the urinary tract abnormal reproduction caused by urinary tract infections. In addition, it is recommended that female patients with urinary tract infections go to the hospital in time and follow the doctor’s instructions for treatment to avoid delaying their condition.