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. An operation hole (6) and an observation hole (5) which are capable of being sealed are respectively provided on the operation mask (3). The operation mask (3) serves as an end surface sealing plate, in such a manner that an inflatable sealed space is formed inside the vagina and the sleeve (2). The full-vagina sleeve cylindrical expansion and pneumoperitoneum integrated device used as an auxiliary operation instrument is combined with advantages of a conventional peritoneoscope operation and a conventional vaginal operation in gynecology, so as to achieve a more minimal invasion in treating a gynecological disease.
