To　evaluate　the　removal　efficiency　of　organic　pollutants　in　the　sewage　by　Harbin　municipal　sewage　treatment　plant,　the　influent　and　effluent　samples　from　the　plant　were　pretreated　by　liquid-liquid　extraction　(LLE)　under　conditions　of　acidity,　neutrality　and　alkalescence　in　sequence,　and　then　were　analyzed　by　gas　chromatograph-mass　spectrum　(GC-MS)　procedures.　Results　indicate　that　there　are　70　species　of　organic　pollutants　in　the　influent　sample　of　the　plant,　which　mainly　consist　of　alkyls,　benzene　series,　esters,　and　heterocyclic　compounds.　Some　of　these　organic　pollutants　are　biotoxic　and　belong　to　persistent　organic　pollutants　(POPs).　Four　species　among　them　are　on　the　list　of　Prior　Pollutants　of　Environmental　Protection　Agency　of　USA　(USEPA).　However,　7　species　of　organic　pollutants　appearing　in　the　effluent　sample　mainly　include　alkyls　of　multi-carbons　and　phthalate　esters.　The　removal　efficiency　of　phthalates　is　poor　because　of　their　poor　biodegradability.　The　sewage　treatment　technique　is　effective　in　removing　most　of　organics　pollutants.