Vulvovaginal itching is mostly caused by gynecological inflammation, mainly seen in trichomonas vaginitis, mycosis fungoides, bacterial vaginosis and so on. 1. Trichomonas vaginitis; it is a common vaginal inflammation caused by Trichomonas vaginalis infection, and is also a common sexually transmitted disease, often coexisting with other sexually transmitted diseases. Vulvar itching and increased vaginal discharge are the main clinical manifestations. 2. Mycosis fungoides: This disease is a common vulvovaginal inflammation caused by Pseudomonas aeruginosa, with the main symptoms of vulvar itching, burning pain, and increased vaginal discharge, which is tofu-dregs-like or curd-like. 3. Bacterial vaginosis: It is a mixed infection caused by the imbalance of the ecological balance of the bacteria that normally reside in the vagina, and it occurs in sexually active women. Its typical clinical manifestation is an increase in vaginal discharge, which is thin and accompanied by a fishy odor. Vaginal itching may also have other causes, it is recommended to go to the hospital in time, complete the examination to clarify the cause of the disease, under the guidance of the doctor to give targeted treatment or treatment.