The present invention relates to an aqueous nanoemulsion composition comprising conjugated linoleic acid. More particularly, the present invention relates to an aqueous nanoemulsion composition comprising 5 to 50 wt % of conjugated linoleic acid, 0.01 to 5 wt % of lecithin, 0.01 to 5 wt % of ethanol as a dissolution aid, 1 to 15 wt % of coemulsifier, 10 to 40 wt % of glycerine and the balance of water.