Itching of the vulva a few days before each menstrual period is mostly related to inflammation caused by bacterial growth. The days before menstruation are the luteal phase, when hormonal fluctuations in a woman’s body can cause a large number of cervicovaginal epithelial cells to be shed, resulting in increased leucorrhea. If you do not pay attention to hygiene, it may cause bacterial growth and vulvar itching and other symptoms. It is recommended to first observe on your own, change your underwear regularly, avoid pads for a long time, and ensure the vulva is clean. If necessary, you can go to a pharmacy and buy a lotion, such as Gynecare or Jelqing, and wash your vulva with a diluted solution of 1:10. If the itching persists for a long time, you need to consider the possibility of gynecological inflammation, such as vulvodynia, vaginitis, etc. It is recommended to go to the gynecology department of the hospital in time to clarify the cause and carry out targeted treatment. In addition, patients should eat more fresh fruits and vegetables and exercise more in daily life to improve immunity and strengthen the body’s ability to resist diseases so as to prevent the invasion of viruses and bacteria.