Abstract: A kind of Internet of things intrinsic safety rescue watch with fast networking and detection is designed. Taking NRF52832 as the control core, Bluetooth 5.0 and mesh networking technology are used to realize fast networking of mesh network after disaster and fast detection of RSSI signal strength area and realize equipment interconnection, intelligent perception, early warning and patrol inspection through mesh network. The test results show that the device can effectively improve the safety and efficiency of the first-line miners, and has practical significance for rapid detection and rescue.