To provide the method for joining the metallic member firmly together by preventing the metallic glass from being crystallized.

Superimposed are not less than two metallic members at least one of which is a metallic glass member 2 made of the amorphous alloy having the supercooled liquid area. The superimposed metallic members 5 are heated to the supercooled liquid area of the metallic glass member 2 and joined mutually together by pressing at least the metallic glass member 2 by a pressing means 1 and the joined metallic member 5 are cooled. The metallic glass member 2 and a metallic member are joined firmly by pressing them in the heated condition, and the crystallization of the metallic glass is prevented by cooling afterwards.