The term cervical nanocysts should refer to cervical nanocysts, which are cysts formed by the retention of secretions from the glands of the cervix and are called cervical glandular cysts, also known as nasal glandular cysts, or cervical nanocysts for short. The vast majority of cases of cervical nanocysts are the result of physiological changes in the cervix. In the process of replacing the columnar epithelium by squamous epithelium in the transformation zone of the cervix, the new squamous epithelium covers the opening of the cervical glandular ducts or extends into the glandular ducts, resulting in blockage of the glandular duct opening, which leads to obstruction of the drainage of the secretions secreted by the glands, which cannot be discharged in time and are further retained within to form cysts. The development of cervical cysts may also be related to local damage to the cervix or chronic inflammation. Local damage to the cervix or chronic inflammation of the cervix may narrow the glandular duct opening, which may cause poor discharge of secretions in the long run, or even lead to blockage of the glandular duct opening, making it impossible to discharge secretions, thus forming cysts. In shallow cervical cysts, single or multiple small greenish-white vesicles can be seen protruding from the surface of the cervix during examination, while in deep cervical cysts, there is no abnormality on the surface of the cervix, which can become cervical hypertrophy. In order to reduce or avoid cervical nuchal translucency, women should pay special attention to pubic hygiene, avoid stimulation of the cervix and avoid the formation of cervical inflammation.