Position detection device

The present invention provides a position detection device capable of suppressing a reduction in position detection accuracy of a moving member. A stroke sensor (1) for detecting the position of a rack shaft (13) in the movement direction is provided with: a target (2) provided on the rack shaft (13); a substrate (3) that faces the target (2), is disposed parallel to the movement direction of the rack shaft (13), and has formed thereon an excitation coil (31) that generates a magnetic field within a range including the target (2), and a sine wave shape detection coil (32) and a cosine wave shape detection coil (33) in which the magnetic field flux of the excitation coil (31) interlinks; a power supply unit (7) that supplies an alternating current to the excitation coil (31); a calculation unit (5) that calculates the position of the rack shaft (13) on the basis of the output voltages of the sine wave shape detection coil (32) and the cosine wave shape detection coil (33); and a shield conductor (41) that supp