When the cervical epithelial chemotaxis process is active, certain foreign pathogens are stimulated, or the migratory zone is repeatedly changed, the active immature cells or hyperplastic squamous epithelium in the migratory zone area can develop in the direction of cervical lesions. Therefore, the cervical canal is the source of cervical lesions, and cervical canal medication is the key to completely curing celiac disease. What are the common causes of migratory lesions? 1, postoperative gynecological diseases: in general, the diseases suitable for taking transvaginal surgery are mainly the following categories: uterine fibroids, uterine adenomyosis, uterine fibroids protruding into the plasma membrane layer of the uterus, urinary incontinence. As these surgeries are mostly performed extraperitoneally with less intra-abdominal operations, the interference with abdominal organs can be minimized and the incidence of postoperative intestinal obstruction is lower. 2, cervical disease: the most common form of chronic cervicitis. It is due to childbirth, abortion, puerperal infection, surgical operation or sexual life damage to the cervix, pathogens invade and cause infection resulting in cervical erosion or cervical mucosa in the inflammation of the stimulation of local hyperplasia and protruding from the cervical opening and formation. May not have any conscious symptoms or only increased vaginal discharge, many patients are in the census or gynecological examination due to other diseases were found in the cervical polyps and other diseases. 3, excessive vaginal douching: normal female vaginal production of leukorrhea, is an acidic secretion, which can cause a local acidic environment, has a self-purifying function, can inhibit the growth and reproduction of the vast majority of disease-causing bacteria, to protect the vagina and the adjacent urethra. In addition, under normal circumstances, there are some non-pathogenic bacteria parasitized in the perineum area, some of which are beneficial to the body and can inhibit harmful bacteria, due to this mutual constraints, so that a variety of flora in a balanced state. Soap is alkaline, too much use will destroy the acidic environment of the vagina.