A cyst in the vaginal wall is a benign cyst that does not cause much damage to a woman’s body. The formation of this disease is considered to have two causes: first, it is considered that the cyst may be formed because the patient’s vaginal wall is locally damaged and the body fluid leaks out. It may be that the mucosa of the vagina is accidentally brought into the deeper part of the vagina during the vaginal surgery stitches, and after the wound heals the vaginal mucosa becomes hyperplastic and finally liquefies to form a cyst, which occurs in a subcutaneous location and is also a subcutaneous cyst. Secondly, the cysts may be formed by blockage of the mesonephric vascular relics near the vagina or by accumulation of excessive secretions, which are found on the anterior or lateral walls of the vagina. Cysts in the vaginal wall have no specific symptoms and the patient will not feel anything. They can only be detected by colposcopy or if the cyst is relatively large and affects the normal quality of sexual life.