The vaginal folds are the material basis on which the vagina can be extremely dilated. Normally there are many vaginal folds, similar to a thicker tube, which after folding towards the center, when the vagina needs to be dilated (mainly during fetal delivery), the mucosal folds disappear, thus protecting the vagina from lacerations as much as possible. The vaginal mucosal folds are subjected to friction and traction during sexual intercourse, which can also lead to sexual arousal of the organism and can cause the glands in the vagina to secrete and provide lubrication for sexual intercourse. The vaginal mucosal folds are mainly connective tissue and also contain more fat. The usual vaginal inflammation, such as non-specific vaginitis or mycosis fungoides, is also an inflammation of these tissues.