Engineering　properties　of　contaminated　soil　have　become　one　of　the　hottest　environmental　geotechnical　study　problems.　The　key　to　determine　whether　the　results　of　physical　tests　can　reflect　the　actual　situation　of　polluted　soil　is　how　to　prepare　remoulded　contaminated　soil　samples.　This　paper　introduces　three　techniques　to　prepare　remoulded　contaminated　soil　samples　in　laboratory,　including　artificial　mixing-compaction　method,　compaction-immersion　method　and　consolidation-penetration　leaching　method.　Taking　CuCl2　as　the　contaminant,　the　advantages　and　disadvantages　of　the　three　methods　and　their　application　scope　were　analyzed　and　compared.　The　results　show　that　the　artificial　mixing-compaction　technique　is　the　most　effective　of　saving　time　and　the　most　widely　applicable　method.　The　compaction-immersion　technique　is　more　suitable　for　those　conditions　that　the　contamination　concentrations　are　known.　The　remoulded　contaminated　soil　samples　prepared　by　the　consolidation-penetration　leaching　technique　have　the　minimum　structural　differences.Thus,　it　is　most　suitable　for　the　study　of　contaminated　soil　seepage,　as　well　as　problems　involving　different　confining　pressures.　©,　2015,　Science　Press.　All　right　reserved.