Provide is a magnetic composition containing a metal Salen complex compound which can be reliably guided by means of magnetic field to a target region that is desired to be treated. Also provided is a method for producing said magnetic composition. A magnetic composition formed by dispersing magnetic particles, in which a metal Salen complex compound is coated with a dispersant, into a polar solvent by means of said dispersant. A method for producing the magnetic composition, the method involving a first step for mixing a metal Salen complex compound with a dispersant in an organic solvent and for coating the metal Salen complex compound with the dispersant, and a second step for dispersing the metal Salen complex into a polar solvent.
