Here a novel and simple design using passive magnets is proposed to locate drilling position and direction to simplify the distal locking process in intramedullary nailing operation in a more intuitive way. By using the magnetic targeting devices, we test on transparent bone with a laser LED and swine tibia with drilling. First of all, we place intramedullary nail including a positioning magnet into tibia medullary cavity. 1st-stage targeting device targets approximate area of the positioning magnet with two responding magnets quickly. 2nd-stage targeting device is component of transparent material, consisting of three magnetic pins and an electrical conductive board. The three symmetrically placed magnetic pins can rotate freely and point to the positioning magnet inside the nail. The drilling position and direction can be obtained by moving the device with those magnetic pins to align with the magnet in the nail. The alignment can be observed by the overlap of magnetic pins and aligning line and detected through the contact between magnetic pins and upper conductive board. When the device is not aligned with the positioning magnet in the nail properly, either in position or direction, the magnetic pins then will contact with the board to trigger a system of two light-emitting diodes for indicating And when the device is right aligned with the positioning magnet in the nail, we can drill the location where we target by a screwdriver.