Because the surface of the cervix is covered with a complex layer of squamous epithelium with good defensive capacity, while the cervical canal is covered with a single layer of columnar epithelium with poor defensive capacity, it is vulnerable to foreign pathogens and is the weakest link. When the cervical epithelial chemotaxis is active, certain foreign pathogens stimulate, or the migratory zone changes repeatedly, active immature cells or proliferating squamous epithelium in the migratory zone can develop in the direction of cervical lesions. The susceptible site of cervical lesions is the migratory zone between the primitive squamous epithelium-columnar epithelium junction and the existing squamous epithelium-columnar epithelium junction. What are the preventive methods for migratory lesions? Celiac disease is not incurable, but the key lies in early treatment and the selection of scientific and reasonable therapeutic drugs and methods. Early detection and early treatment of vaginal discharge is a signal of the health of the female reproductive system. Once there is an increase in discharge, watery or purulent, or irregular vaginal bleeding, you should pay great attention to it and seek early treatment so as not to delay treatment. 1, do the preventive treatment after abortion and childbirth: when cervical laceration is found, it should be sutured in time. Since the immunity of local tissue of the cervix decreases after childbirth, drugs that can improve the local immunity of the cervix, such as the biological new drug Narcoja, should be used in time to enhance the ability to resist the invasion of foreign germs and prevent the occurrence of cervical erosion. 2, pay attention to the sexual life hygiene: eliminate unclean sex life or sex life is too frequent, avoid menstrual period together with room, and to keep the spirit happy, enhance the physical resistance to disease.