Pentachlorophenol　(PCP)　is　a　persistent　pollutant　and　a　suspected　human　carcinogen.　It　can　be　found　in　the　air,　water,　and　soil　and　enters　the　environment　through　evaporation　from　treated　wood　surfaces,　industrial　spills,　and　disposal　at　uncontrolled　hazardous　waste　sites.　Ecotoxicity　of　PCP　necessitates　the　development　of　rapid　and　reliable　remediation　techniques.　Electrocatalytic　hydrogenolysis　(ECH)　has　been　proven　as　a　promising　method　for　detoxification　of　halogenated　wastes,　due　to　its　rapid　reaction　rate,　low　apparatus　cost,　mild　reaction　conditions,　and　absence　of　secondary　contaminants.　Challenge　for　the　application　of　ECH　is　to　prepare　a　Pd-coated　cathode　with　high　stability,　high　catalytic　activity,　and　low　Pd　loading　level.　In　this　work,　Pd/polypyrrole-sodium　dodecyl　benzene　sulfonate/meshed　Ti　(Pd/PPy-SDBS/Ti)　electrode　was　prepared　and　was　characterized　by　cyclic　voltammetry,　scanning　electron　microscopy,　X-ray　diffraction,　and　inductively　coupled　plasma-atomic　emission　spectrometry.　Electrochemically　reductive　dechlorination　of　PCP　on　the　Pd/PPy-SDBS/Ti　electrode　in　aqueous　solution　was　investigated.　Pd　microparticles　were　uniformly　dispersed　on　PPy-SDBS　film　which　was　previously　electrodeposited　on　the　meshed　Ti　supporting　electrode.　The　loading　of　Pd　on　the　electrode　was　0.72　mg　cm(-2).　Electrocatalytic　dechlorination　of　PCP　was　performed　in　a　two-compartment　cell　separated　by　cation-exchange　membrane.　The　PCP　removal　on　the　Pd/PPy-SDBS/Ti　electrode　could　reach　100　%　within　70　min　with　dechlorination　current　3　mA　when　PCP　initial　concentration　was　10　mg　L-1　and　initial　pH　was　2.4.　Conversion　of　PCP　on　the　Pd/PPy-SDBS/Ti　electrode　followed　pseudo-first-order　kinetics,　and　the　apparent　activation　energy　was　13.0　kJ　mol(-1).　The　removal　of　PCP　still　kept　100　%　after　70　min　dechlorination　when　the　Pd/PPy-SDBS/Ti　cathode　was　reused　ten　times.　The　electrode　exhibited　promising　dechlorination　potential　with　high　electrocatalytic　activity,　good　stability,　and　low　cost.