The present invention provides a novel (meth)acrylate ester-based resin composition which, for example, exhibits various good properties such as weather resistance, heat resistance, water resistance, acid resistance, alkali resistance, warm water resistance, impact resistance, processability, flexibility, hardness, elongation, transparency, luster, fleshy property, mirroring property, pigment dispersibility, and driability when being used, for example, as crosslinking type paints, adhesives, pressure sensitive adhesives, and fiber-processing materials, and has so low a resin viscosity as to be utilizable as a resin for coping with environmental pollution of such as low-VOC paints. The (meth)acrylate ester-based resin composition comprises a (meth)acrylate ester-based polymer (I) and a crosslinking agent, wherein the (meth)acrylate ester-based polymer is obtained by a process including the step of polymerizing a monomer component including a polymerizable unsaturated monomer (a) as an essential component and has a reactive group wherein the polymerizable unsaturated monomer (a) is an alkylcyclohexylalkyl ester of (meth)acrylic acid, and wherein the crosslinking agent has at least two functional groups that are reactable with the reactive group.