The present invention provides a magnetic head including a slider 1 and a thin-film element 3, a magnetic recording/reproducing apparatus including the same, and a method for manufacturing the same. According to the present invention, since a resist layer is formed on the thin-film element 3 prior to a milling process, the thin-film element can be protected from the influence of the milling process, and generation of an element recess can be inhibited. Further, since the slider 1 is preferably formed of a ceramic composition including Al.sub.2 O.sub.3 and TiC, the roughness can be readily adjusted by the milling process. Moreover, when the center line mean roughness of each opposing surface 5 of the slider, said surface opposing the recording medium, is represented by R.sub.ah1 and that of the disk serving as the recording medium is represented by R.sub.ad, the relationship, 6 nm.ltoreq.R.sub.ah1 +R.sub.ad .ltoreq.19 nm is preferably satisfied. Due to this, adsorption between the opposing surface and the surface of the disk can be prevented, and the torque for starting the disk can be lowered.