A full-vagina sleeve cylindrical expansion and pneumoperitoneum integrated device, includes: an elastic embedded ring (1) and a sleeve (2). The elastic embedded ring (1) is made of elastic material and embedded inside a pelvic outlet. The elastic embedded ring (1) is capable of expanding in a natural state inside a vagina to tightly adhere to wall of the vagina, or being inflated into an annular ring which tightly adheres to the vagina wall so as to elastically expand a vagina tissue. The sleeve (2) is made of elastic material or a non-elastic material and is cylinder-shaped. A front end ring of the sleeve (2) is connected with the elastic embedded ring (1), and a rear end ring extends out of the vagina. An operation mask (3) is fixedly provided on the rear end ring.