Vulvar itching occurs before menstruation, this is due to the luteal secretion period after ovulation, progesterone is more vigorous causing more vaginal shedding cells, which will result in more secretions, and may cause vaginal flora environment imbalance to appear vulvar itching. If this situation occurs frequently, the vaginal secretion should be tested after ovulation, that is, before menstruation, to rule out any vaginal flora environment disorder and cause vaginitis. According to the situation need to be vaginal plugging treatment, to avoid prolonged vaginal inflammation caused by cervical inflammation occurs. Patients can also buy some lotion, such as gynecological cleaning or Cleanse 1:10 water to wash the vulva, observe the time of 3-5 days. If the situation still exists in the next month, laboratory treatment must be carried out to avoid a long time to affect the health of the body.