An　alpha-LaBMoO6　crystal　with　dimensions　of　phi　20　x　30　mm(3)　has　been　successfully　grown　by　a　modified　Czochralski　method.　The　grown　crystal　belongs　to　the　low　temperature　phase　and　crystallizes　in　the　monoclinic　system　with　space　group　P2(1).　Its　crystal　structure　features　a　three-dimensional　network　composed　of　one-dimensional　LaO7,　BO2　and　MoO4　chains　along　the　b-axis　interconnected　via　corner-　and　edge-sharing.　Corner-sharing　BO3　triangles　are　linked　together　forming　novel　zigzag　chains　along　the　b-axis.　It　is　found　that　the　alpha-LaBMoO6　crystal　has　a　SHG　effect　which　is　1.8　times　as　large　as　that　of　KDP　crystal.　alpha-LaBMoO6　crystal　exhibits　high　transparency　in　the　range　of　350-1100　nm.　The　absorption　edge　of　the　crystal　in　the　UV　range　is　at　340　nm.　Therefore,　the　alpha-LaBMoO6　crystal　could　be　considered　as　a　potential　nonlinear　optical　crystal　and　self-frequency　doubling　laser　crystal　material.