Treatment composition for textile goods

The present invention provides a treatment agent composition for fiber products capable of producing an exceptional odor-eliminating and odor-preventing effect against various odors. This treatment agent composition for fiber products comprises: (A) highly branched cyclic dextrin; (B) at least one compound selected from the group consisting of an amine compound having within each molecule one to three C10-26 hydrocarbon groups optionally split with an ester group or an amide group, a salt of the amine compound, and a quaternized form of the amine compound; and (C) at least one compound selected from (C-1)-(C-3) below: (C-1) a fatty acid expressed by RaCOOH (Ra is a fatty acid represented by a C8-35 alkyl or alkenyl group), (C-2) a silicone compound, and (C-3) an aliphatic alcohol represented by RbOH (Rb is an aliphatic alcohol represented by a C8-35 alkyl or alkenyl group).