To provide a new fluorine-containing polyether carboxylic acid ester having not less than two polymerizable functional groups in a molecule, which is obtained by a one-step reaction of directly reacting an alcohol with an acid halide.

This is a fluorine-containing polyether carboxylic acid ester represented by the general formula: R1OCOCF(CF3)[OCF2CF(CF3)]aO(CF2)bO[CF(CF3)CF2O]cCF(CF3)COOR1, wherein R1 is a group represented by the general formula: CH2=CR2COO(CH2)dCH2- (R2 is a hydrogen atom or methyl group, d is an integer of 1-3), a+c is an integer of not greater than 28 except 0, preferably an integer of 6-28 and b is an integer of not smaller than 2.