If severe cervical erosion becomes cancerous, then there are often the following signs, the most common of which are persistent vaginal discharge and recurrent contact bleeding after intercourse, or irregular vaginal bleeding manifestations. Cervical erosion in women can often be caused by physiological columnar epithelial ectasia due to estrogen stimulation in the body, or it can be caused by cervical intraepithelial neoplasia or even early lesions of cervical cancer. Therefore, when severe cervical erosion becomes cancerous, there will be obvious signs and symptoms, first of all, there will be a large number of necrotic cells shed locally, so it will cause continuous vaginal discharge, and the discharge may be blood-like, purulent, and rice slop-like, and may be accompanied by bad odor. Usually, after intercourse or gynecological examination, contact bleeding may occur, and the bleeding may be prolonged and heavy. 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, for women with cervical erosion, cervical TCT and HPV are often needed to rule out cervical intraepithelial neoplasia and cervical cancer, as early diagnosis will increase the chance of cervical cancer surgery.