Polymer　blends　consisting　of　chloride　polyethylene　(CPE),　and　enzymatic　hydrolysis　lignin(EHL)　were　prepared　by　compression　molding.　The　thermal　and　mechanical　properties　of　EHL-CPE　composites　were　investigated.　The　results　showed　that　the　presence　of　EHL,　which　interfered　with　the　intramolecular　and　intermolecular　interactions　and　Impact　strength　of　CPE　were　improved.　The　values　of　impact　strength　and　thermal　stability　time　rose　quickly　with　ncreasingEHL　content　from　5　to　20　phr.There　was　a　obvious　increase　color　change　time　in　Congo　red　dipstick　experiment　of　CPE　by　adding　EHL.　The　thermal　testing　results　showed　that　EEL　could　be　a　novel　additive　for　increasing　thermal　stability　of　CPE.