TECHNOLOGY FOCUS - ORGANIC CHEMISTRY - Preferred Components: The (meth)acrylate monomer is monomer having saturated cyclic hydrocarbon group with 4-20 carbon atoms. In (meth)acrylate monomer, carbon atom in cyclic hydrocarbon group directly bonds to ester group in (meth)acrylate group. The cyclic hydrocarbon group in (meth)acrylate monomer comprises cyclohexyl group, t-butylcyclohexyl group, isobornyl group, dicyclopentanyl group and/or dicyclopentenyl group. The (meth)acrylate monomer comprises cyclohexyl methacrylate, t-butylcyclohexyl methacrylate, benzyl methacrylate, isobornyl methacrylate, isobornyl acrylate, dicyclopentanyl methacrylate, dicyclopentanyl acrylate, dicyclopentenyl methacrylate and/or dicyclopentenyl acrylate. The fluorine-containing polymer further comprises other monomer that is free from fluorine atom, which includes vinyl halide and/or vinylidene halide. The water- and oil-repellent agent further contains aqueous medium and aqueous dispersion. Preferred Definitions:    X=H, linear or branched 1-21C alkyl, F, Cl, Br, I, CFX1X2, CN, linear or branched 1-21C fluoroalkyl, optionally substituted benzyl or optionally substituted Ph;    X1, X2=H, F, Cl, Br or I;    Z=1-10C aliphatic group, 6-18C aromatic or cycloaliphatic group, -CH2CH2N(R1)SO2-, -CH2CH(OZ1)CH2-, -(CH2)m-SO2-(CH2)n- or -(CH2)m-S-(CH2)n;    Rf=1-20C linear or branched fluoroalkyl;    R1=1-4C alkyl;    Z1=H or acetyl;    m=1-10;and    n=0-10.    EXAMPLE - A perfluorohexylethyl methacrylate (13FMA, 78.4 g), isobornyl methacrylate (IBMA, 26.0 g), purified water (250 g), tripropyleneglycol (35.1 g), polyoxyethylene oleyl ether (5.4 g) and polyoxyethylene isotridecyl ether (5.4 g) were charged in 1 L autoclave and stirred at 60 degrees C for 15 minutes, and then emulsified and dispersed with supersonic wave. After atmosphere in autoclave was replaced with nitrogen, vinyl chloride (VCM, 30 g) was charged by injection. A 2,2-azobis-(2-amidinopropane)dihydrochloride (0.91 g) was added to conduct reaction at 60 degrees C for 5 hours, and aqueous dispersion of polymer was obtained. The composition (weight ratio) of monomers in obtained polymer was 13FMA/IBMA/VCM=60/20/20.