To accurately control sucked quantity of molten metal sucked into a pump for molten metal through a molten metal passage and molten metal supplying quantity supplied from the pump for molten metal through the molten metal passage.

In a device for supplying the molten metal, arranged so as to be freely communicated into the pump C for molten metal by selecting anyone in a plurality of molten metal passages 22, 23 with a shifting operation of a valve body 18, a sliding part F slid according to the shift of the valve body is constituted of an annular member 29 elastically deformable in the diameter direction and formed as C-shape by cutting one position in the peripheral direction and a sliding member 30 relatively slid by engaging with the annular member and having the longer length along the sliding direction than the length of the annular member, and at least one of the annular member and the sliding member is formed of a ceramics.