A so-called vaginal wall cyst is usually a localized accumulation of fluid in the vaginal wall and is encapsulated so that the cyst fluid is usually pale yellow, or dark purple. Due to the different nature of vaginal wall cysts, they are usually divided into ordinary vaginal wall cysts, or vaginal wall cysts with endometriosis. In the case of ordinary vaginal wall cysts, they are often caused by external stimulation, or without any trigger causing fluid to pool in the vaginal wall without draining, thus forming cystic echogenicity, and over time, the vaginal wall cysts will slowly grow, thus affecting the woman’s urination, and even It leads to localized downward movement of the vaginal opening and may also affect the woman’s sex life. Therefore, if the cyst is more than three centimeters or five centimeters, surgery to remove the cyst is often considered. If the cyst is caused by endometriosis, the cyst will cause local pain during menstruation and progressive aggravation, mainly due to local necrosis and exfoliation of the endometrium.