Positive urine routine nitrite often indicates the presence of urinary system inflammation. It is commonly caused by bacterial infections, with E. coli, Staphylococcus, and Aspergillus being more common. It is usually retrograde infection via the urethra, and the urinary system causes symptoms such as urinary frequency, urinary urgency, and urinary pain. For the patient’s life and work to produce a certain impact, usually need to carry out active treatment, you can use broad-spectrum antibiotics, such as quinolone antibiotics levofloxacin to carry out treatment. If the symptoms of frequent and urgent urination are obvious, oral flavonol permethrin tablets can be taken to relieve the symptoms. In daily life, we should pay attention to drink more water, urinate more often, take bed rest and improve our immune system to prevent and control the infection. For teenage women, if they have frequent sexual life, they should pay attention to control the frequency of sexual life, which can reduce the occurrence of urinary tract infection.