To provide a magnetic structure that is highly reliable and has small temperature dependency, and functions as a magnetic body without any residual magnetization.

The magnetic structure includes: a vessel 10; a plurality of granular ferromagnetic body 20 confined into the vessel 10; and rocking equipment 30 for moving each of the plurality of granular ferromagnetic bodies 20 by vibrating the vessel 10. The magnetic structure 40 can be obtained, which can be constituted of the vessel 10 without any airtightness and pressure resistance and functions as a magnetic body with little residual magnetization.