To provide an electromagnetic wave absorption method for further improving electromagnetic wave absorption efficiency, by using a method for covering an electromagnetic wave generating body with a ferromagnetic material.

A ferromagnetic material is aligned, so that the direction of the axis of easy magnetization in electronic wave absorbers 31 and 32 for covering electronic components 2 that are electromagnetic wave absorbers coincides with that of generation magnetic field constituent. In this case, when a material where the move of a magnetic wall dominates as a magnetization mechanism to be used, the ferromagnetic material is aligned in the direction, since the direction of the axis of easy magnetization coincides with a direction S of magnetic moment. When a material in which rotary magnetization dominates the magnetization mechanism, the ferromagnetic material is aligned in the direction of the axis of easy magnetization, since the direction is at right angles to the direction S of the magnetic moment.