There are three main reasons for the odor in the lower body, and specific treatment should be done for the cause. First, due to the patient does not often change underwear, infrequent bathing or cleaning the vulva and caused by this is mainly a personal hygiene problem. This can be solved by changing habits, bathing and changing underwear frequently, and cleaning the vulva. Second, gynecological inflammatory diseases, such as endometritis or vaginitis, etc. If the patient has inflammation, especially anaerobic bacterial infection, there is usually a fishy odor. So it is recommended that the patient do a gynecological internal examination and also take the white belt for laboratory tests to determine the location and type of inflammation for symptomatic treatment. If the infection is anaerobic bacteria, choose to use metronidazole vaginal effervescent tablets, along with ornitazole oral for treatment. Thirdly, consider gynecological tumor diseases, such as endometrial cancer, cervical cancer and so on. If the tumor is necrotic and infected, there will be a corpse odor, which is particularly unpleasant, and the treatment effect is not good. It is necessary to find out the cause, and if necessary, surgery or chemotherapy is needed.