Adenocarcinoma in situ of the uterine cervix is an early stage cancer, which means the lesion is confined to the uterine cervix, and the cure rate is relatively high if early surgical treatment is performed. Cervical cancer is one of the common cancers among women. Adenocarcinoma in situ refers to adenocarcinoma occurring in the cervical area, where the adenocarcinoma cells are confined to the epithelial tissue of the cervix without breaking through the envelope to invade other tissues. Early stage of cervical cancer can be treated with individualized treatment plan. If the patient is relatively young, cervical conization can be used for in situ adenocarcinoma of the uterine cervix, and the fertility can be preserved with regular review in the future. If the patient is older, total hysterectomy can be done, which can reduce the recurrence rate after surgery. Regardless of whether conservative treatment or surgery is adopted, regular review is needed after the operation to closely observe the vaginal secretion and whether there is any contact bleeding, especially if there is high-risk HPV infection, the chances of cancer are very high, and attention should be paid to it.