A fluorine-containing unsaturated cyclic compound represented by the formula (1)(a): ##STR00001## wherein Z.sup.3 are the same or different and each is --Rf.sup.3-Z.sup.4, in which Z.sup.4 is at least one functional group selected from the group consisting of OH group, COOH group, a derivative of carboxylic acid group and a functional group protected by a protective group which can convert the functional group to OH group by reaction with an acid; Rf.sup.3 is a fluorine-containing alkylene group which has 1 to 30 carbon atoms and may have ether bond; n11 is an integer of from 1 to 4.