Abstract: There is provided a method for manufacturing an impeller, in which a brazing layer having a necessary thickness can be secured easily while the waste of a brazing filler metal is eliminated. The present invention includes a step X of producing a disc 11 and a cover 12 separately. Blades 13 are formed integrally with either one of the disc 11 and the cover 12. As the subsequent step, the present invention includes a step Y of joining the disc 11 and the cover 12 to each other by brazing in the state in which a brazing filler metal is interposed between a first joint surface provided on the blade 13 and a second joint surface provided on either one of the disc 11 and the cover 12. In the present invention, in the step Y, brazing operation for joining is performed by providing spacers 13c, which are used to maintain a space between the first joint surface and the second joint surface, between the first joint surface and the second joint surface.