Sentinel lymph nodes of cervical cancer are in the pelvic-abdominal cavity, specifically in the obturator foramen, around the iliac vessels, and next to the uterus. Sentinel lymph nodes refer to the first station lymph nodes in the lymphatic drainage area of the primary tumor, and cervical cancer sentinel lymph nodes are mainly distributed in the obturatorium, endoskeleton, and exoskeleton, followed by the paravalvular and iliac common. It refers to the first station of primary tumor lymphatic metastasis. Sentinel lymph nodes act as a barrier to stop the spread of tumor cells from lymphatic channels, and when cervical cancer is found, peripheral lymph node examination needs to be done routinely to see the extent of spread of tumor cells. Sentinel lymph node biopsy is nowadays mostly done during cervical cancer clearance surgery to help determine the stage of cervical cancer.