A pin-aligned magnetic device is provided, which includes a first magnetic core body, a second magnetic core body, and a plurality of conductors. The first magnetic core body is internally disposed with a magnetic element, and the magnetic element is joined to the plurality of conductors. The second magnetic core body covers the plurality of conductors on the first magnetic core body, so that the plurality of conductors is mounted inside the magnetic device and pins thereof are exposed from two lateral sides of the magnetic device, to form a plurality of pins. The foregoing design makes room at the bottom of the magnetic device, thus facilitating space saving and utilization on a PCB board. Moreover, each pin can be in good electrical contact with the board, effectively enhancing product yield on a production line.