J-PARC MLF (Materials Life Science Experimental Facility) is a world leading pulsed neutron and muon facility. The goal of the accelerator power is 1MW and the current power is 300kW. The Target-Moderator system is well designed to achieve very high performance. 17 neutron instruments with unique characteristics are in use for the user program. The number of proposals and users are steadily increasing year by year with the performance of the accelerator.