Disclosed is a fluorine-containing copolymer comprising a copolymer of a polyfluoroalkyl alcohol(meth)acrylic acid derivative represented by the general formula:CnF2n+1(CH2CF2)a(CF2CF2)b(CH2CH2)cOCOCR═CH2 [I](R: a hydrogen atom or a methyl group, n: an integer of 1 to 6, a: an integer of 1 to 4, b: an integer of 1 to 3, c: an integer of 1 to 3) and a polysiloxane containing a terminal (meth)acryloyloxy group represented by the general formula:(R1: a hydrogen atom or a methyl group, R2: a C1-C6 linear or branched divalent alkylene group, R3: a C1-C30 linear or branched alkyl group, R4 and R5: a hydrogen atom, a methyl group, or a phenyl group, m: an integer of 1 to 200).
