Abstract: A photosensitive composition characterized by comprising:(a) a vinyl alcohol polymer containing the following structural unit A and having a saponification degree of a vinyl ester unit of not less than 70 mol %: ##STR1## wherein R.sup.1, R.sup.2 and R.sup.3 each represents H or a hydrocarbon group having 1 to 4 carbon atoms;(b) a radically polymerizable ethylenic unsaturated compound; and,(c) a photopolymerization initiator,having flexiblity and impact resistance which can maintain sufficient softness but are not broken particularly even at low temperature and low humidity so that resin plates showing high printing quality can be obtained from the photosensitive composition.