Abstract: A portable positioning instrument for personnel positioning is designed. The positioning instrument has UWB precise positioning and RFID region positioning, which can ensure that the personnel positioning system can be used before and after upgrading from region positioning to precise positioning. The Bluetooth component is integrated on the locator to realize the data communication between the locator and the mine-used smart phone. The expanded function of the locator is displayed through the mobile APP, making its function more comprehensive and operation more convenient. At the same time, the locator does not need too much user interface, which makes the locator has the advantages of small size, low cost, long endurance, good expansibility and so on.