Abstract: In order to realize the auxiliary rescue and to realize the miniaturization of volume, functional diversification, the reduction of labor intensity of custody and maintenance personnel of the existing mine hand patrol equipment in the market, and to realize the portability and search and rescue after disaster, taking ultra low power microcontroller 430F5438A of TI Company as control core, through the small volume storage technology of Bluetooth BLE and TF-CARD, the portable IOT (internet of things) watch device integrate the functions of post-disaster rescue, data patrol, time and step in one. Workers can wear the watches on them wrists, and check the information of the nearby equipment and the information about the alarm, and can also send information to find the wearer to achieve the search and rescue.