Hot vaginal opening is commonly associated with vulvar inflammation and vaginitis, which can be categorized into trichomonas vaginitis, bacterial vaginitis, vulvovaginal pseudomycelium vaginitis and so on. 1. Vulvar inflammation: local inflammation of the vulva leads to local tissue congestion and edema, and thus a burning sensation at the vaginal opening, aggravated by sexual intercourse or urination, and the treatment is based on local medication. 2. Vaginitis may, can be divided into trichomonas vaginitis, bacterial vaginitis, vulvovaginal pseudomycelium vaginitis and so on. (1) Trichomonas vaginitis: is due to vaginal inflammation caused by Trichomonas vaginalis, sexual intercourse transmission is its main mode of transmission, the main symptoms are the increase of vaginal secretions and vulvar itching, burning of the vaginal opening, etc., the treatment is generally based on oral metronidazole, sexual partners need to be treated at the same time, and to inform the patient and sexual partners to avoid unprotected sex before the cure. (2) Bacterial vaginitis: it is caused by the imbalance of normal flora in the vagina, manifested by the increase of thin vaginal secretion with fishy odor accompanied by itching and burning sensation of the vulva and vaginal opening, etc. The treatment is generally based on systemic or local medication. (3) Vulvovaginal pseudomycelium vaginitis: manifested as tofu dregs-like discharge, vulvar examination can be seen vulvar erythema, edema, may be accompanied by scratches. Treatment is based on elimination of triggers, or local application of azole antifungal drugs (clotrimazole preparations or miconazole preparations, etc.). If there is any discomfort in the vaginal opening, it is recommended to consult a doctor in time to find out the cause with the help of the doctor.