Abstract: Spun poly (vinyl alcohol) with different degrees of alcoholysis by gel-spinn ing method and drew them,then got a series of PVA fiber with alcoholysis degree 99.5%,93% and 86%.Analyzed these fibers with FT-IR and NMR,and measured the stren gth of them.The results showed that partially alcoholized PVA with lower degree of alcoholysis could decrease the chance of H-bond formation,and increase dr aw ability and fiber strength.