To provide a one pack curing type resin emulsion composition having excellent polymerization stability and excellent film formability and capable of forming films excellent in water (whitening), solvent and corrosion resistances.

This one pack curing type resin emulsion composition is prepared by dispersing a copolymer comprising structural units derived from the following component A, structural units derived from the following component B, and structural units derived from the following component C in an aqueous medium containing an emulsifier comprising at least one of a reactive surfactant and a water-soluble polymer. (A) A dicyclopentadiene derivative. (B) An alkoxysilyl group-containing monomer. (C) A polymerizable monomer capable of being copolymerized with the components A and B. The structural units derived from the component A, the structural units derived from the component B, and the structural units derived from the component C are preferably set to 0.5-40 wt.%, 0.01-5 wt.% and 55-99.49 wt.%, respectively, in the copolymer.