Po lyv inyl Alcoho l ( PVA) is w ater??soluble polymer , and no n??t ox ic t o human body. It has go od bio??compat ibility, so PVA develops rapidly in medical t reatment . Develo pment in the study o f PVA, including adv ance of PVA hydro??gel in eye, wo und dr essing s and art ificial car tilag e, and application o f PVA member in medicine and so o n are intro duced in det ail in t he re?? v iew