The　synthesis　process　of　polycarboxylate　superplasticizer　(PCE)　by　bulk　polymerization　was　investigated.　Compared　with　BPO　as　initiator,　PCE　prepared　by　using　AIBN　as　initiator　exhibited　better　cement　paste　fluidities.　PCE　using　isopentenyl　polyethylene　glycol　(TPEG)　or　isobutenyl　polyethylene　glycol　(IPEG)　as　macromonomer　showed　excellent　fluidities　and　retaining　properties　at　80　degrees　C　and　75　degrees　C,　respectively.　The　fumaric　acid　was　more　suitable　to　copolymerize　as　the　third　monomer　than　maleic　anhydride.　The　molecular　weight　measurements　showed　that　the　characteristics　of　molecular　weight　and　its　distribution　for　all　the　synthesized　samples　were　in　accordance　with　their　cement　paste　fluidities.　The　solid-state　PCEs　can　be　conveniently　dissolved　into　water　to　prepare　PCE　solution　with　arbitrary　concentration,　and　still　with　good　cement　application　performances.