The　extraction　capability　of　Cu2+　in　aqueous　solution　with　imidazolium　ionic　liquids,　[Bmim]　PF6,　[Hmim]　PF6,　and　[Omim]　PF6,　was　studied　in　this　research.　It　was　found　that　the　extraction　efficiency　for　Cu2+　was　quite　low　when　only　imidazaolium　ionic　liquids　was　used　as　extractant.　On　the　other　hand,　with　the　addition　of　ditizone,　the　extraction　efficiency　for　Cu2+　was　enhanced　from　2.1%　to　93.1%,　which　was　much　higher　compared　to　CCl4　extraction　system.　Meanwhile,　the　extraction　efficiency　for　Cu2+　decreased　with　the　increase　of　the　alkyl　chain　length　of　the　imidazolium　cations.　The　effects　of　temperature,　pH　value,　extraction　time　and　salt　effect　were　also　studied.　The　temperature　had　no　significant　impact　on　the　extraction　efficiency,　and　extraction　equilibration　was　reached　within　6　minutes.　The　extraction　efficiency　strongly　depended　on　the　solution　pH.　It　was　5.7%　at　pH　10.　The　addition　of　salts　into　the　solution　lowered　the　extraction　efficiency.