Lower body old burning sensation and trichomonas infection, fungal infection, anaerobic infection caused by vulvovaginitis, mainly manifested as vulvar burning sensation, pain, redness, swelling, itching, etc.; can be coated with clotrimazole cream, erythromycin ointment, metronidazole gel under the guidance of a physician. 1. Trichomonas infection: can be transmitted through sexual intercourse, mainly Trichomonas vaginalis infection, manifested as increased secretions, yellow, fishy odor and vulvar itching; need to be treated with husband and wife, you can use ornidazole suppositories vaginally, and rubbed with metronidazole gel to relieve. 2. Fungal infections: fungal infections caused by vulvovaginitis, also manifested as localized burning sensation in the vulva, pain, itching, secretion of soya bean dregs; you can use miconazole nitrate suppository vaginal medication, rubbed clotrimazole cream. 3. anaerobic infections: anaerobic infections caused by vulvar or vaginitis resulting in vulvar burning sensation, you can use metronidazole effervescent tablets vaginal plugging treatment, external application of metronidazole gel relief. The old burning sensation in the lower body, it is recommended to consult a doctor as soon as possible, after the cause of the cause of treatment, not blindly use their own medication.