The invention discloses a machine room track high-precision detection system comprising a communication authentication base station which communicates with an auxiliary positioning chip in a machine room personnel identity authentication wrist strap, obtains the relative distance between the auxiliary positioning chip and the communication authentication base station and sends the relative distance to a background server module; an RFID reader-writer module, used for acquiring position information in an RFID label in the machine room personnel identity authentication wrist strap and sending the position information to the background server module; a background server module, used for analyzing the obtained position information and obtaining real-time position coordinates of the personnel in the machine room through calculation by utilizing the communication positioning base station data and the RFID tag data; a background application module, serving as a web server background and beingused for identity authentication wrist strap issuing information acquisition, activity area division, query statistics and user management; and an application layer, providing a user interface, a mapdisplay interface, a personnel management interface, a query statistics interface and a system management interface. The invention further discloses a machine room track high-precision detection method.