Cervical duct cells are a description of a diagnostic report of cervical TBS cytology. When performing cervical liquid-based cytology, the presence of cervical canal cells is reported, suggesting that the material taken was cervical canal cells. Cervical canal cells are the pathogenic cells of the cervical canal of the uterus, these cells are found in almost everyone, and their number is indicative of a normal or abnormal cervix in a person. In the healing process of cervical erosion, there can be cell proliferation under the columnar epithelium, and can be differentiated to the squamous epithelium, this change is called squamous epithelial chemotaxis, usually cervical normal women, there is no chemotaxis cells.