Liquid metal flow has been expected to be applied in various fields. For example, liquid lithium (Li) jet is applied as a beam target in the International Fusion Materials Facility (IFMIF) and as a charge stripper in Radioactive Isotope Beam Factory (RIBF) at RIKEN, lithium-lead (Li-Pb) as a blanket in a Helical-type fusion reactor and so on. Especially, since the Li jet must flow with high velocity for removal of heat due to beams, the surface of it might fluctuate. The surface fluctuation causes an increase of the damage risk of the flow channel and the moderation of generated neutrons in the IFMIF. And in the RIBF, the fluctuation causes the diffusion of a beam profile passing through the fluctuating Li jet and the beam intensity is attenuated. So, in these facilities, it is strongly desirable to suppress surface fluctuations. In this study, we verify suppression of the surface fluctuation by Magneto-Hydro-Dynamics (MHD) interaction. Results in this research on MHD interaction to liquid metal contribute to the development of not only a beam target in the IFMIF and RIBF but also the Li-Pb blanket, in which the heat transfer under strong magnetic field could determine the performance.