Redness of the vaginal opening can be caused by the following two clinical reasons: 1. Local allergy, such as allergy to sanitary napkins or new underwear, causing local allergic reactions and local redness of the vagina, which is recommended to be treated with anti-allergic treatment, such as local application of mometasone cream or paregoric ointment after washing. 2. When the local will appear inflammatory reaction, such as the appearance of red, swelling, heat, pain and other clinical symptoms, accompanied by local burning sensation. It is recommended that anti-inflammatory treatment be actively given and, if necessary, routine laboratory tests of the leukorrhea be performed to exclude the flushing of the vaginal opening caused by inflammation of the vagina. It is recommended that women should pay attention to sexual and menstrual hygiene in their daily life and take better care of their vulva.