A fluorochemical composition comprising of organic solvent and fluorochemical oligomer represented by the general formula: X-M.sup.f.sub.nM.sup.h.sub.mM.sup.a.sub.r-G wherein X represents the residue of an initiator or hydrogen; M.sup.f represents units derived from fluorinated monomers; M.sup.h represents units derived from a non-fluorinated monomers; M.sup.a represents units having a silyl group represented by the formula: ##STR00001## wherein each of Y.sup.4, Y.sup.5 and Y.sup.6 independently represents an alkyl group, an aryl group or a hydrolyzable group; G is a monovalent organic group comprising the residue of a chain transfer agent; n represents a value of 1 to 100; m represents a value of 0 to 100; r represents a value of 0 to 100; and n+m+r is at least 2.