Near-infrared　(NIR)　spectroscopy　technique　can　be　used　to　characterize　the　ability　of　reverse　micelles　for　solubilizing　water　in　chloroform.　For　C-12-s-C-12　center　dot　2Br(s=2,　3,　4,　5,　6,　8)　homologue,　no　matter　whether　adding　NaBr　in　water,　the　ability　of　the　reverse　micelles　for　solubilizing　water　reduces　with　increasing　spacer　length　since　the　surfactant　with　shorter　spacer　trends　to　form　larger　reverse　micelles.　Compared　with　the　system　without　NaBr,　the　ability　of　the　reverse　micelles　for　solubilizing　water　decreases　when　adding　NaBr　in　water.