If yellowish leukorrhea is accompanied by vulvar itching, it is best to treat it with metronidazole suppositories. Because yellowish leukorrhea with vulvar itching, the most common clinical cause is Candida infection, or trichomonas infection. Compound metronidazole acid treats both Candida infection, trichomonas vaginitis, and bacterial vaginosis, so choose compound metronidazole suppositories and use the medicine first. If the symptoms are significantly relieved after using the medicine, it is recommended to use the medicine for 7 consecutive days and not to have sexual intercourse during the period of using the medicine. If the symptoms can not be relieved after using the medicine, it is recommended to stop the medicine and go to the hospital to do a detailed examination to find out whether there are pathogenic bacteria in the vagina, and then give the appropriate medication according to the infection of pathogenic bacteria. In addition, also to exclude mycoplasma and chlamydia infection.