A　new　generation　of　surfactant,　Gemini　surfactants,　have　been　synthesized　and　have　attracted　the　attention　of　various　industrial　and　academic　research　groups.　This　study　focused　on　the　use　of　symmetric　and　dissymmetric　quaternary　ammonium　Gemini　surfactants　to　immobilize　naphthalene　onto　soil　particles,　and　is　used　as　an　example　of　an　innovative　application　to　remove　HOC　in　situ　using　the　surfactant-enhanced　sorption　zone.　The　sorption　capacity　of　modified　soils　by　Gemini　surfactant　and　natural　soils　was　compared　and　the　naphthalene　sorption　efficiency,　in　the　absence　and　presence　of　Gemini　surfactants　with　different　alkyl　chain　lengths,　was　investigated　in　the　soil-water　system.　The　results　have　shown　that　the　increased　added　Gemini　surfactant　formed　admicelles　at　the　interface　of　soil/water　having　superior　capability　to　retard　contaminant.　Symmetric　and　dissymmetric　Gemini　surfactants　have　opposite　effect　on　the　aspect　of　removing　of　PAH　attributing　to　their　solubilization　and　sorption　behavior　in　soil-water　system.　Compared　with　the　natural　soil,　sorption　of　naphthalene　by　Gemini-modified　soil　is　noticeably　enhanced　following　the　order　of　C12-2-16　＜　C12-2-12　＜　C12-2-8.　However,　the　symmetric　Gemini　surfactant　C12-2-12　is　the　optimized　one　for　in　situ　barrier　remediation,　which　is　not　only　has　relative　high　retention　ability　but　also　low　dosage.