In　this　paper,　an　environmentally　friendly　Bridgman-Stockbarger　technique　was　used　to　growth　a　fluoride　single　crystal　LiYF4:　Pr3+　(YLF:　Pr3+).　Polarized　absorption　spectra,　polarized　fluorescence　spectra,　and　fluorescence　decay　curves　were　measured　at　room　temperature.　A　broad　emission　extending　from　0.75　to　1.09　mu　m　was　recorded　in　YLF:　Pr3+　by　594　nm　excitation.　Detailed　polarized　spectral　analyses　related　to　the　D-1(2)　multiplet　were　carried　out　based　on　the　modified　Judd-Ofelt　theory.　The　relationship　between　the　calculated　spectral　parameters　and　the　fluorescence　spectra　for　the　D-1(2)　multiplet　of　Pr3+　ions　was　discussed.　The　results　imply　that　the　YLF:　Pr3+　crystal　may　be　a　potential　tunable　infrared　laser　gain　medium　with　the　D-1(2)　as　an　upper　level.