Abstract: Under the condition that the existing ID card of coal mine personnel positioning system can still work normally under disaster, combining the practical necessity of emergency rescue, a suitable personnel locator for coal mine emergency rescue is designed by making full use of data storage function of personnel positioning system and unique matching feature between ID card and personnel ID. It combines ZigBee wireless communication function of personnel positioning system with existing PDA. By using rechargeable battery and personnel positioning application, and adjusting the effective receive distance, it can locate the area of ID cards carried by people.