Pd/polypyrrole-sodium　dodecyl　benzene　sulfonate/meshed　Ti　(Pd/PPy-SDBS/Ti)　electrode　was　prepared　by　electrodeposition　method　and　employed　to　dechlorinate　three　monochlorophenol　isomers　including　2-chlorophenol　(2-CP),　3-chlorophenol　(3-CP)　and　4-chlorophenol　(4-CP).　The　impacts　of　current,　pH　and　concentration　on　the　dechlorination　process　of　2-CP　were　investigated　and　the　current　of　5mA　and　the　initial　pH　of　2.4　were　selected　to　be　the　optimized　dechlorination　conditions,　under　which　2-CP　with　a　concentration　of　100mg/L　could　be　completely　removed　within　60　min.　The　degradation　difficulty　of　monochlorophenols　is　2-CP＞3-CP＞4-CP.　The　reaction　processes　of　three　monochlorophenols　follow　pseudo　first　order　kinetics　and　the　observed　reaction　rate　constants　of　2-CP,　3-CP,　4-CP　are　6.393×10-2,　6.668×10-2　and　6.990×10-2　min-1,　respectively.　©　2016,　The　Editorial　Board　of　Journal　of　Basic　Science　and　Engineering.　All　right　reserved.