PROBLEM TO BE SOLVED: To provide a manufacturing method of a double metal member by the metal spinning in which the double metal member of a dual structure including an outside metal part reduced in diameter can be formed in an outer circumference of an inside metal portion, for example, of a metallic small sake cup, a cup, a tip component of a rocket, a tip component of an airplane and a tip portion of a high speed train, etc.SOLUTION: A manufacturing method of a double metal member is configured as follows: a metal forming member with an outside metal part is formed in an outer circumference of a cylindrical bottomed inside metal part by the metal spinning; the inside metal part of the metal forming member is fitted in the fitting part of a forming die; also, the outside metal part of the metal forming member is subjected to the metal spinning along an outer circumferential guide surface reduced in diameter of the forming die, while sandwiching a metal forming member by a presser part of a presser die; and
