A fixture of an indication tag has a magnetic body and is used as a marker for preventing, for example, items in a store or furnishings in public facilities from being removed without permission. The fixture is formed by connecting an engagement male portion (2) to one end side of a filamentous coupling portion (4) and an engagement female portion (3) to the other end side to form a loop (R) by engaging the engagement male portion (2) and the engagement female portion (3). The filamentous coupling portion (4) is formed with a filament (40) having a soft magnetic material fiber (41) in order to obscure the location of the magnetic body for the marker preventing it from being removed.