A　novel　method　for　the　rapid　determination　of　high　concentration　benzene　indoor　air　using　ionic　liquid-based　ultraviolet　spectrophotometry　(UV)　has　been　developed.　The　effects　of　different　extraction　conditions　(such　as　ionic　liquids　support,　ionic　liquids　volume,　enrichment　time,　extraction　temperature,　extraction　time　and　so　on)　on　extraction　efficiency　are　investigated.　The　optimal　conditions　are　as　follows:　absorbent　cotton　for　carrier,　enrichment　time　1　h,　extraction　temperature　20°C,　extraction　time　10　min,　extraction　volume　of　[BMIm]NTf2　30　μl.　The　results　show　better　enrichmennt　effects　for　high　concentration　benzene　vapor　when　using　ultraviolet　spectrophotometry　for　detection.　This　method　is　simple,　fast,　convenient　and　easy　for　detection.　Besides,　the　cost　is　quite　low.　Satisfactory　results　can　be　obtained　for　high　concentration　benzene　determination.　©　All　Rights　Reserved.