Celiac disease is now known as cervical columnar epithelial ectasia, which usually does not cause bleeding during pregnancy, and gynecological diseases that cause celiac-like manifestations that may bleed during pregnancy. Cervical columnar epithelial ectasia is the permeation of the mesenchyme under the columnar epithelium, which looks like erosion to the naked eye and used to be known as celiac disease, but in fact it is not a disease but a normal physiological phenomenon. Cervical columnar ectopia does not usually cause specific symptoms, so pregnant women usually do not bleed because of cervical columnar ectopia. However, cervicitis, cervical intraepithelial neoplasia, cervical cancer and other gynecological diseases lead to the appearance of cervical erosion, and women during pregnancy may experience abnormal vaginal bleeding due to the disease. Cervical bleeding during pregnancy is recommended to consult a doctor for differential diagnosis.