The　comb-type　polycarboxylic　acid　has　excellent　architecture　designability,　providing　the　theoretical　basis　and　technical　support　for　the　ecologicalization　and　high　performance　of　green　concrete.　In　this　study,　polyacrylic　acid　(PAA),　hydroxymethoxy　polyoxyethylene　propylene　glycol　(HMPEPG)　and　amino　methoxy　polyoxyethylene　propylene　glycol　(AMPEPG)　were　used　as　reactants　based　on　the　esterification　and　amidation　reactions,　and　the　two　comb-type　polycarboxylic　acids　(PCEs)　which　backbone　and　side　chain　were　connected　by　ester　bond　and　amide　bond　were　synthesized,　respectively.　The　measurements　of　Infrared　spectroscopy　(IR)　and　molecular　weight　proved　the　expected　molecular　structures.　The　application　results　showed　that　the　PCE　with　ester　linkage　exhibited　better　initial　fluidity　of　cement　paste　and　early　strength　of　concrete,　and　moreover,　the　PCE　with　amide　linkage　exhibited　better　fluidity　retention　of　cement　paste　and　slump　flow　of　concrete.　With　respect　to　their　different　mechanism,　the　PCE　with　ester　linkage　behaved　more　stable　adsorption　behavior　and　stronger　acceleration　to　hydration,　whereas　the　PCE　with　amide　linkage　behaved　lower　surface　tension　and　stronger　ability　in　gas-liquid　interface　orientation.　These　two　PCEs　can　be　applied　to　the　concretes　with　high　early　strength　and　high　pumping　requirements　respectively,　presenting　a　good　promotion　value　and　application　prospect.　©　2018,　Materials　Review　Magazine.　All　right　reserved.