This　article　proposes　a　low-temperature　free　radical　polymerization　method　of　anti-clay　silane-modified　polycarboxylic　superplasticizer　(S-PCE).　Through　molecular　structure　design,　strong　adsorption　silane　coupling　agent　(gamma-methylacrylloxy　propyl　trimethoxysilane,　KH570)　was　introduced　in　S-PCE.　A　series　of　tests　and　theoretical　studies　were　carried　out　to　obtain　chemical　structure　characterization,　dispersion　ability,　montmorillonite　(MMT)　tolerance　and　adsorption　behavior　of　S-PCE.　The　results　showed　that　compared　with　the　traditional　methylallyl　alcohol　polyoxyethylene　ether　(HPEG)　type　PCE　(H-PCE)　and　low　clay-sensitivity　Naphthalene-based　superplasticizer　(BNS),　S-PCE　possessed　better　dispersion　and　fluidity　retention　ability　of　cement　particles　in　clay-involved　environment,　and　could　appropriately　improve　mechanical　properties　of　concrete.　It　is　mainly　due　to　that　silanol　(Si-OH)　groups　can　be　dehydrated　and　bonded　to　silanol　on　the　surface　of　cement　particles　and　MMT.　Thus,　the　competitive　adsorption　advantage　of　MMT　was　lowered,　the　possibility　of　S-PCE　binding　with　cement　particle　was　greatly　improved　and　the　intercalation　of　polyoxyethylene　side　chain　was　avoided.