VIN grade 1 is not cancer, it is low grade vaginal intraepithelial neoplasia, which is a type of cancerous lesion. If the biopsy result indicates VIN grade 1, it is recommended to also perform HPV examination. If the biopsy result is positive for high-risk HPV, it is necessary to treat with anti-HPV drugs to remove the high-risk virus, such as anti-HPV bioprotein dressing and Rebieson for vaginal application or vulva coating. VIN grade 1 may develop into vaginal cancer if not treated and intervened in time, but it is rare to develop into vaginal cancer. it is recommended to review regularly after treatment, once every 3-6 months.