The black mole on the vulva is an abnormal phenomenon, we need to observe whether there is any recent change in the black pigmented mole, such as protruding skin or further growth. It is recommended to go to the hospital in time to have the pigmented mole surgically removed and sent for pathological examination, which is mainly due to the hormonal changes in the body that lead to the local pigmentation deepening and the formation of the mole. We should pay attention to the cleanliness of the vulva, especially the menstrual period is very special, which can easily lead to bacterial infection, and we need to wash it every day and review the situation of the black pigmented nevus regularly.