A　novel　lanthanide　2-hydroxynicotinic　acid　coordination　polymer　1　{[LaL(HL)　(H(2)O)(3)]1/3　(SO(4))(2)/3　(H(3)O)(2)H(2)O}　(H(2)L=2-hydroxynicotinic　acid)　has　been　synthesized　under　hydrothermal　condition　and　characterized　by　crystal　X-ray　diffraction,　IR,　UV,　TGA,　two-dimensional　infrared　(2D　IR)　correlation　spectroscopy　with　magnetic　and　thermal　perturbation.　In　1,　La　ions　are　connected　by　2-hydroxynicotinic　acid　through　both　carboxylate　oxygen　atoms　and　oxygen　atoms　from　hydroxyl　group　in　pyridine　to　generate　a　2D　layer　in　the　ab　plane,　these　layers　are　further　connected　by　weak　interactions　to　form　a　3D　framework　along　c　axis.　The　response　of　out-of-plane　bending　vibrations　of　N-H　and　C-H　are　remarkable　in　the　2D　IR　correlation　spectra　under　magnetic　perturbation,　this　may　attributes　to　the　inducement　of　pi-electron　cloud　deformation　under　magnetic　perturbation,　nu(4)　vibrations　from　SO(4)(2-)　was　also　sensitive　to　magnetic　perturbation.　In　addition,　stretching　vibrations　from　N-H　are　sensitive　to　thermal　perturbation.