If a woman with cervical erosion develops cervical cancer precursors, the most common ones are persistent vaginal discharge and recurrent contact bleeding after intercourse, or irregular vaginal bleeding manifestations. Cervical erosion in women may often be caused by physiological columnar epithelial ectasia due to estrogen stimulation in the body, or it may be caused by cervical intraepithelial neoplasia, or even early lesions of cervical cancer. Therefore, when cervical erosion becomes cancerous, there will be obvious signs and symptoms, first of all, there will be a large number of necrotic cells shed, so it will cause continuous vaginal discharge, and the discharge may be blood-like, purulent discharge, rice slop-like, and may be accompanied by bad odor. Usually, after intercourse or gynecological examination, it causes contact bleeding, and the bleeding may last longer and may be more copious. For postmenopausal women, irregular vaginal bleeding often occurs, and for women with menstruation, it may lead to increased menstrual flow and prolonged menstrual periods. Therefore, women with cervical erosion often need to undergo cervical TCT and HPV to rule out cervical intraepithelial neoplasia and cervical cancer, because early diagnosis will increase the chance of cervical cancer surgery and cure.