PURPOSE: To manufacture a composite metallic material where the ceramics particles are uniformly diffused on the metal matrix.

CONSTITUTION: In a manufacturing method of the composite metallic material of ceramics particles diffusion type, two rotary blades 4 which are rotated around the vertical axis are symmetrically mounted to the center part of a crucible 1, the flow of the molten metal passing through the center part of the crucible 1 is generated in the molten metal 3 in the crubicle by rotating the rotary blades 4 in a mutually opposite direction, the tip part of a ceramics powder supplying hopper 6 is dipped in the flow of the molten metal immediately before passing the center part of the crucible 1, and the ceramics powder 5 is discharged at this position to execute stirring and mixing.