A thin-film magnetic head includes: a TMR element; a lower electrode layer and an upper electrode layer for feeding a current used for signal detection to the TMR element; and an insulating layer provided between the lower and upper electrode layers and located adjacent to a side of the TMR element. The thin-film magnetic head further includes: an FFG layer that introduces a signal flux to the TMR element, the FFG layer touching one of the top surfaces of the TMR element and extending from the region in which the TMR element is located to the region in which the insulating layer is located; and a base film located between the FFG layer and the insulating layer and used as a base when the FFG layer is formed.