Construction of new beam line for LEPS2 Project at SPring-8 has been done and beam commissioning has been carried. LEPS2 is the project for high energy hadron physics using intense high energy gamma beam as probe. The gamma beam is produced by laser backward Compton scattering with injecting high power UV laser to the 8 GeV electron beam at long straight section (LSS) of SPring-8 storage ring. The target intensities of the gamma beam are ∼107/s for Eγ<2.4 GeV, ∼106/s for Eγ<2.9 GeV. For these purpose, new beam line with new frontend laser injection system is constructed. Some chambers and absorbers of storage ring are modified from regular type to get enough aperture for laser injection. The laser monitor system is also installed at the LSS for tuning the laser injecting direction. The beam commissioning has been carried by injecting 355 nm UV laser of total 56 W to stored electron beams of 100 mA operation and about 7*106/s gamma ray has been obtained successfully.