Nuclear energy is one of the most promising energy for the future.The disposal of high-level radioactive nuclear waste is a big problem.The nuclear waste problem has restricted the sustainable development of nuclear energy.Accelerator Driven Systems(ADS)was considered to have a very good potential for safely and efficiently burn MAs.LBE spallation target is one of the potential candidate of the ADS(Accelerator Driven Sub-critical System).The thermohydraulics character of LBE is much different from the traditional reactor coolant,such as water and gas.So we need to develop the LBE technology.