If a woman has a swollen perineum, she needs to consider the following possibilities: first, varicose veins in the perineum, which are very rich in blood vessels in the perineum, and if some factors cause excessive abdominal pressure in women for a long time, such as obesity and pregnancy, this will cause pressure on the perineum, which will easily cause varicose veins. Patients with varicose veins will feel a significant swelling in the perineum. Secondly, the acute phase of some gynecological inflammatory diseases can also lead to perineal swelling, such as acute mycotic vaginitis, trichomonas vaginitis, etc., because the stimulation of inflammation can lead to local congestion and swelling of the perineum, which can also cause pain. Thirdly, if there are lesions in the vulva, they can also cause swelling of the perineum, such as vestibular gland cysts, vulvar hematoma and vulvar edema, etc.