A magnetic property determination apparatus for detecting a magnetic property of magnetic material included in a paper sheet transported through a transport path and determining the magnetic materials, the apparatus comprising: a magnetization unit generating a magnetization magnetic field including a first magnetic field region and a second magnetic field region on the transport path, a magnetic field intensity and a magnetic field direction are set differently between the first magnetic field region and the second magnetic field region so that the magnetic materials are magnetized in different magnetization directions depending on coercive forces of the magnetic materials; and a magnetic detection unit generating a bias magnetic field on the transport path downstream of the magnetization unit in a transport direction that is a direction of the transport path, and detecting a magnetic charge of the magnetic materials by detecting variations of the bias magnetic field, characterized in that the magnetization unit includes a first magnet and a first magnetically permeable member arranged on a first side of the transport path and a second magnet and a second magnetically permeable member arranged on a second side of the transport path, wherein the first magnet and the second magnet are shifted in the transport direction with respect to each other, and the first magnetic field region is formed between the first magnet and the second magnet, and wherein the first magnetically permeable member and the second magnetically permeable member are shifted in the transport direction with respect to each other, and the second magnetic field region is formed between the first magnetically permeable member and the second magnetically permeable member. a magnetization unit generating a magnetization magnetic field including a first magnetic field region and a second magnetic field region on the transport path, a magnetic field intensity and a magnetic field direction are set differently between the first magnetic field region and the second magnetic field region so that the magnetic materials are magnetized in different magnetization directions depending on coercive forces of the magnetic materials; and a magnetic detection unit generating a bias magnetic field on the transport path downstream of the magnetization unit in a transport direction that is a direction of the transport path, and detecting a magnetic charge of the magnetic materials by detecting variations of the bias magnetic field, characterized in that the magnetization unit includes a first magnet and a first magnetically permeable member arranged on a first side of the transport path and a second magnet and a second magnetically permeable member arranged on a second side of the transport path, wherein the first magnet and the second magnet are shifted in the transport direction with respect to each other, and the first magnetic field region is formed between the first magnet and the second magnet, and wherein the first magnetically permeable member and the second magnetically permeable member are shifted in the transport direction with respect to each other, and the second magnetic field region is formed between the first magnetically permeable member and the second magnetically permeable member.