BV is the abbreviation for Bacterial Vaginal Infection, which includes the detection of leukocytes, red blood cells, trichomonas, mycobacteria and pH in the leukocytes, and BV is the detection of bacterial infection in the vagina. If the corresponding pathogens or cells that indicate bacterial infection are detected during the test, the diagnosis will be clear. The vaginal medication can be used to treat the vaginal infection according to the cause, so that the treatment can be targeted and more effective.