To obtain a closed magnetic circuit thin-film conductor that hardly generates leakage magnetic fluxes, and has a high Q-value for countermeasures against EMI problems and EMS.

This closed magnetic circuit inductor, in which the ends of a thin film magnetic core are arranged closely to each other is manufactured in such a way that a patterned soft magnetic multilayered film is formed on one or both surfaces of an insulating substrate and the multilayered film is cut off along the pattern. Then a coil 3 is wound about the cross section of the cut-off multilayered film, and the film is formed in a ring-like shape.