The infrared beamline provides users infrared spectroscopy measurement from far-infrared to near-infrared, and diffraction limited spatial resolution microspectroscopy and imaging in mid-infrared range. The main research field include:(1)Biology and biomedicine : chemical imaging of single cell and tissues, protein secondary structure; (2) Physics: low energy electrodynamics of correlated electron system; Metal-insulator transition (3) Material science: optical property of semiconductor, dielectric and superconductor; vibrational spectroscopy of organic molecule; structure of polymer;(4)Chemistry: structural and chemical characterization of catalysis;(5)Geology: component and structure of fluid inclusion in mineral.