This intramedullary nail navigation system detects the accurate position of intramedullary nails using near-field electromagnetic positioning technology. It displays the 3D position of the intramedullary nail and sighting device on the screen and thus enables the surgeon to work precisely and fast, which shortens surgery time. Intramedullary nails are made of a titanium alloy, which is light and robust at the same time, protecting the human body from allergy and immune reactions.