PURPOSE: To enhance a heating efficiency by increasing a slit width of a horizontal section toward a radial direction of a crucible and specifying its size in the crucible having a plurality of slits longitudinally to melt cold crucible metal for melting and casting metal.

CONSTITUTION: A crucible 1 for melting cold crucible metal is formed in a cylindrical shape by aligning a plurality of segments 3 on a circumference in parallel with slits 2 extended longitudinally in the entire length L between the segments 3. A slit length is extended toward a radially outward direction of the crucible in all horizontal sections so that a slit width of an inner side is 0.1-1.2mm, and a slit width of an outer side is 1.5mm or more. Ceramics are filled in such slits 2. Thus, metal can be efficiently heated and melted with low power while preventing melted metal difference, and an ingot of high quality is obtained.