Abstract：In March 2019, the FASER experiment which will search for new light, weakly-interacting particles in forward region of the interaction point of the LHC was approved by CERN. By exploiting a unique location underground in the CERN tunnel system, FASER will provide world-leading sensitivity in a relatively small, quick, and inexpensive experiment. The FASER detector is currently under construction to be installed into the tunnel during 2020 in LHC Long Shutdown 2. This seminar will describe the physics motivations, detector design, expected performance of FASER, and current status, as well as the physics prospects.