An O/W emulsion composition having excellent preparation stability, feeling of use and ultraviolet light blocking properties. The O/W emulsion composition has the first oil phase and second oil phase described below, which are separately dispersed in a water phase.(i) a first oil phase which is formed by using a polyoxyethylene/polyoxyalkylene alkyl ether block polymer represented by general formula (1) or (2) as an emulsifying agent, and contains an organic ultraviolet absorbent, while having an average particle diameter of not more than 700 nm(ii) a second oil phase which is formed by using an alkyl-modified carboxyvinyl polymer as an emulsifying agent, and contains a silicone oil R
