A paper sheet magnetic detection apparatus that is configured to detect a magnetic material in a paper sheet, comprising: a transport path that is configured to transport paper sheets one by one; a magnetic sensor that is configured to detect the magnetic material; at least one magnet (21, 24) that is arranged on one face side of the transport path and is configured to generate a bias magnetic field for the magnetic sensor; a drive roller that includes an outer peripheral member made of a non-magnetic material arranged on an outer peripheral surface, the drive roller being arranged near the magnetic sensor on the other face side of the transport path and is configured to apply a transporting force to each of the paper sheets on the transport path; and a pinch roller that includes a bearing member made of a magnetic material and an outer peripheral member made of a non-magnetic material arranged on an outer peripheral surface of the bearing member, the pinch roller is arranged on the one face side opposing the drive roller, wherein the transport path is formed between a first guide surface made of a non-magnetic material and a second guide surface made of a non-magnetic material and the paper sheet is transported between the first guide surface and the second guide surface, the pinch roller is arranged in such a manner that only an outer peripheral surface and side surfaces of the outer peripheral member of the pinch roller are exposed through an opening provided in the first guide surface, and the drive roller is arranged in such a manner that only an outer peripheral surface and side surfaces of the outer peripheral member of the drive roller are exposed through an opening provided in the second guide surface. a transport path that is configured to transport paper sheets one by one; a magnetic sensor that is configured to detect the magnetic material; at least one magnet (21, 24) that is arranged on one face side of the transport path and is configured to generate a bias magnetic field for the magnetic sensor; a drive roller that includes an outer peripheral member made of a non-magnetic material arranged on an outer peripheral surface, the drive roller being arranged near the magnetic sensor on the other face side of the transport path and is configured to apply a transporting force to each of the paper sheets on the transport path; and a pinch roller that includes a bearing member made of a magnetic material and an outer peripheral member made of a non-magnetic material arranged on an outer peripheral surface of the bearing member, the pinch roller is arranged on the one face side opposing the drive roller, wherein the transport path is formed between a first guide surface made of a non-magnetic material and a second guide surface made of a non-magnetic material and the paper sheet is transported between the first guide surface and the second guide surface, the pinch roller is arranged in such a manner that only an outer peripheral surface and side surfaces of the outer peripheral member of the pinch roller are exposed through an opening provided in the first guide surface, and the drive roller is arranged in such a manner that only an outer peripheral surface and side surfaces of the outer peripheral member of the drive roller are exposed through an opening provided in the second guide surface.