The　growth　and　spectroscopic　properties　of　Tm3+:Sr3La2　(BO3)4　crystal　are　reported.　Based　on　Judd-Ofelt　theory,　the　intensity　parameters　are　calculated　to　be　Ω2=4.46×10-20　cm2,　Ω4=3.18×10-20　cm2,　and　Ω6=1.88×10-20　cm2　according　to　the　absorption　spectrum.　The　emission　cross　section　for　the　3F4→3H6　transition　are　estimated　to　be　0.694×10-20　cm2　at　1.82　μ　m　by　the　reciprocity　method　according　to　the　absorption　cross　section,　and　the　relation　between　gain　cross　section　and　the　population　inversion　rate　for　the　3F4→3H6　transition　is　discussed.　Compared　with　the　other　Tm3+-doped　materials,　Sr3La2(BO3)4　crystal　has　a　larger　emission　cross　section　and　wider　tuning　range.　Therefore,　Sr3La2(BO3)4　crystal　may　be　a　potential　tunable　near-infrared　laser　crystal.