The anterior lip of the cervix refers to the upper part of the external opening of the cervix, the entire cervix is rounded and divided into the upper and lower parts, also called the anterior and posterior lips, and is a common medical term. When a woman is suffering from cervical erosion or cervical cysts, it is more clearly indicated in which part of the cervix the abnormality is present, and then medication or surgery is given. The opening of the cervix in women who have not had children is round and has a small hole in the middle. When a woman gives birth during pregnancy, the cervix becomes fissured and will be clearly divided into an anterior and posterior lip. The female cervix consists mainly of connective tissue with a small amount of smooth muscle and elastic fibers. The mucosal epithelium is a highly columnar epithelium that secretes a certain amount of mucus plugs to block the external cervical opening, and the cervix is also subject to cyclic changes due to the hormonal secretion of the ovaries.