Under normal circumstances, the female vagina should contain more Lactobacillus, which can maintain the acidic environment of the vagina and is not conducive to the growth of bacteria. When the lactobacilli decrease, other bacteria will enter the vagina to reproduce and grow, and vaginitis will occur. The presence of stray bacteria in the routine examination of the leukorrhea indicates the presence of bacterial vaginitis. The main point is to see whether the heterobacteria are one + or two + or three +, the more the plus sign means that the inflammation is more serious, if it is a +, it means that the inflammation is a little bit lighter, if three + means that the inflammation is relatively more serious. Most of the stray bacteria are considered to be anaerobic infections. If there are bacteria in the leukorrhea, it is considered to be bacterial vaginitis, generally take some of the metronidazole, tinidazole, ornidazole and other anaerobic drugs for symptomatic treatment, if necessary, can also be combined with levofloxacin or clindamycin and other antibiotics to carry out symptomatic treatment.