In neutron scattering facilities, it is important to provide a wide range of state-of-the-art sample environment equipment for cutting-edge outputs on the academic and industrial research front. In the Materials and Life Science Experimental Facility (MLF) of J-PARC, a sample environment team has been officially organized with succeeding the previous ad hoc sample environment team, aiming to comprehensively measure safety of the sample environment in the MLF and to perform efficient user support in sample environment. In the MLF, each beamline (BL) has its own dedicated sample environment equipment, while some additional BL-common sample environment equipment is prepared by the sample environment team. MLF users can also bring their own equipment or devices for their experiment. All equipment and devices are required to pass a rigorous safety examination before being allowed in the MLF.