In most cases, cervical retention cysts are a normal physiologic change in the cervix. There are glands in the cervix, and the secretions produced by the glands are discharged through the openings of the glandular ducts. However, if in the process of replacing the columnar epithelium with squamous epithelium, the new squamous epithelium blocks the openings of the glandular ducts of the cervix, the secretions produced by the glands can not be discharged, and are retained within the glands, resulting in the formation of a retention cyst. Other conditions, such as chronic cervicitis or the surface of the cervix, if localized and damaged, may block the openings of the cervical glands, leading to the formation of cervical retention cysts. However, deep cervical retention cysts need to be differentiated from adenocarcinoma of the cervix in the course of diagnosis and treatment, and patients need to follow the advice of specialists, actively cooperate with the examination and treatment, and make regular follow-up visits.