In this paper

a review is given on progresses in synchrotron infrared radiation

and the infrared beamline upgrade design

performance and research program at NSRL are introduced. The original infrared beamline constructed in phase II of the NSRL project cannot benefit from advantages of synchrotron and meet the rapid demand of infrared research. We redesigned and optimized optical elements of the beamline to extend the spectrum region to 10 cm-1 and constructed a new microspectroscopy experimental station. The test shows that the synchrotron infrared radiation has obvious brightness advantage

which provides a power tool for microspectroscopy research.