PURPOSE: To produce a single crystal casting suitable for the production of a turbine blade, etc.

CONSTITUTION: This producing method and device are adopted for uniformizing the growth of columnar crystal and coarsening the crystal grains by arranging a crystal growing adjusting member 3 having small heat conductivity at the center part of the inner part of a starter 1. Columnar crystals are stably grown in the vertical direction to a chill plate and the probability of growing the crystal inclined to the vertical line to the chill plate is small. Since the number of crystals stored in a selector is small, the length of the selector can be shortened. When the length of the selector is shortened, not only the unevenness of the crystal orientation becomes small, but also the molten metal quantity made into single crystal can be reduced. Further, the device is simplified and this producing load can be reduced.