PURPOSE: To cast continuously metal with which breakout does not arise by storing the other liquid which does not react with the molten metal in a tank, and solidifying continuously the molten metal on the liquid surface while fluidizing said liquid at the speed equal to the outflow speed of the molten metal or above.

CONSTITUTION: Continuous casting is pefformed by the following method in the case of using molten steel as the molten metal to be cast and molten lead as fluidized liquid, respectively: Molten steel 2 is supplied at a constant speed from the molten metal supply nozzle 2 of a holding furnace 1 for the molten steel onto the liquid surface of molten lead 4. The flowing speed of the lead 4 in this case is kept at the speed equal to the moving speed of the steel 2 or above. The covering of the surface of the molten lead having the larger specific gravity with the molten steel 2 is thus resulted in accordance with surface tension. Therefore the wall thicknesses in all parts are exactly uniform with the molten steel 2 having any broad width and thin wall thickness. The bottom surface in contact with the lead 4 and the top surface in contact with the tank atmosphere both have the luminance of a specular surface. The top surface of the steel 2 is gas and the casting mold of the bottom surface is the liquid surface, receiving no restrictions of solid. The generation of breakout is thus obviated at all.