Bleeding from the cervix when doing hysteroscopy may be caused by normal operation, or it may be caused by cervicitis or cervical cancer, etc. The last case is more serious and needs to be dealt with in time. 1. Caused by normal operation: if the cervix is operated during hysteroscopy, such as polypectomy, it may cause bleeding. 2. Cervicitis: Bleeding when doing hysteroscopy of the cervix may also be a sign of cervicitis. Cervicitis leads to congestion and edema in the cervix, and slight stimulation may cause bleeding. 3. Cervical cancer: Bleeding during hysteroscopic examination of the cervix may also be a manifestation of cervical cancer. Cervical cancer will show contact vaginal bleeding, especially after transvaginal operation or sexual life. This condition requires prompt treatment to prevent continued progression of the lesion. If bleeding occurs during hysteroscopy of the cervix, and the bleeding is heavy or lasts for a long time, it is necessary to actively seek medical treatment and relevant examinations to clarify the cause of the bleeding and carry out treatment.