Abstract: The flowing behavior of molten steel was studied on the c. c. simulator with two pairs of magnetic poles imposed. Ph-Sn-Bi molten alloy and silicon oil were simulated as molten steel and slag, respectively. It was shown that a ring of electric current is created in molten alloy by the effect of two pairs of magnetic poles. As a result, the flow velocity from the outlet of submerged entry nozzle in mold is suppressed effectively and the erosion of shell near narrow face of the mold is weakened. Furthermore, the meniscus fluctuation can be stabilized. But this Phenomenon is not more obvious when the magnetic flux density is increased to some degree.