An aqueous silicone dispersion capable of forming an elastomer coating film when dried at a normal temperature, said aqueous silicone dispersion comprising: (A) a silicone elastomer which is an addition reaction product of an alkenyl group-containing organopolysiloxane (A-1) having 2 or more alkenyl groups per molecule, an organopolysiloxane (A-2) having 3 or more hydrosilyl groups per molecule and a linear diorganopolysiloxane (A-3) having hydrosilyl groups at both ends of the molecular chain； (B) an anionic surfactant； (C) a nonionic surfactant； (D) colloidal silica； and (E) water.本發明為一種水性聚矽氧分散液，其係以常溫乾燥形成彈性體皮膜之水性聚矽氧分散液，其特徵為包含： (A)於1分子中具有2個以上烯基之含烯基之有機聚矽氧烷(A-1)、與 於1分子中具有3個以上氫矽烷基之有機聚矽氧烷(A-2)及於分子鏈兩末端具有氫矽烷基之直鏈狀的二有機聚矽氧烷(A-3)的加成反應生成物之聚矽氧彈性體、 (B)陰離子性界面活性劑、 (C)非離子性界面活性劑、 (D)膠態二氧化矽及(E)水。
