2,　4-Dichlorophenol　(2,　4-DCP)　is　a　typical　groundwater　phenolic　pollutants.　In　this　paper,　the　zero-valent　iron-Permeable　Reactive　Barrier　(Fe0-PRB)　is　being　used　on　the　degradation　of　2,　4-DCP　in　groundwater.　Monitoring　data　include　pH,　redox　potential　and　the　concentration　of　2,　4-DCP.　Finally,　the　analysis　result　shows　that　Fe0-PRB　technology　has　the　high-value　in　removal　2,　4-DCP　in　groundwater,　which　support　for　engineering　applications.　©　2013　Taylor　&　Francis　Group.