Adenocarcinoma in situ of the cervix is a malignant tumor. Adenocarcinoma in situ of the cervix refers to the carcinoma of cervical epithelial cells, but it has not broken through the basement membrane and has not infiltrated the mesenchyme, which is an early stage lesion. Adenocarcinoma in situ of the uterine cervix is similar to carcinoma in situ of the uterine cervix, and its pathologic features include larger and irregular nuclei, deeper staining, more nuclear schizophrenia, and disorganized arrangement of crowded cells, but with intact basement membrane. Adenocarcinoma in situ of the uterine cervix is usually removed surgically. For women of childbearing age with reproductive requirements, cervical conization is adopted. If the progression of the disease is not detected in time and tissue infiltration and metastasis occurs, total excision of the uterus and adnexa is required, and women will lose their reproductive function. Therefore, women are advised to pay attention to local hygiene and have regular gynecological examinations for early detection and treatment. It is recommended that patients should consult a doctor in time when any discomfort occurs, and actively treat the disease under the guidance of a professional doctor, so as to avoid delaying the condition.