A　new　borate　single　crystal　of　Sr3Tb(BO3)3　with　dimension　20×25　mm2　has　been　grown　by　the　Czochralski　method.　The　grown　crystal　was　characterized　by　DTATGA,　FTIR　and　X-ray　powder　diffraction　analysis.　The　results　showed　the　crystal　with　[BO3]　3-　is　congruently　melting　at　1351.35　°C　which　belongs　to　hexagonal　structure.　The　hardness　of　Sr3Tb(BO3)　3　crystal　is　422.5　VDH,　and　is　equal　to　5.0　moh.　The　thermal　expansion　coefficients　were　determined　to　be　2.08×10-5/°C　along　(1　0　0)　direction　and　7.43×10-6/°C　along　(0　0　1)　direction　and　the　transmission　spectrum　was　measured　in　3201800　nm　at　room　temperature.　The　magnetic　properties　of　the　single　crystal　were　studied　which　showed　its　paramagnetism　and　magnetic　anisotropy.　The　specific　Faraday　rotation　of　single　crystal　was　measured　at　room　temperature　in　532,　633,　and　1064　nm　wavelength.　The　Verdet　constants　and　magneto-optical　figures　of　merit　were　investigated.　The　primary　emphasis　is　laid　to　explore　a　new　magneto-optical　material,　all　the　magneto-optical　properties　of　Sr3Tb(BO　3)3　are　comparing　to　the　ones　of　TGG.　©　2010　Elsevier　B.V.　All　rights　reserved.