Several　interfacial　modifiers　were　used　in　this　paper　to　improve　the　interface　bonding　strength　between　the　crumb　rubber　and　matrix　and　the　whole　strength　of　Crumb　Rubber　Mortar　(CRM).　In　addition,　the　function　mechanisms　of　CRM　by　various　interfacial　modifiers　were　discussed.　Based　on　the　test　results,　interfacial　modifiers　could　obviously　improve　the　interface　bonding　strength　between　the　crumb　rubber　and　matrix　and　the　whole　strength　of　CRM.　Silicone　modified　styrene-acryl　ate-emulsion　had　the　best　effect.