Abstract: For bad flexibility and single function in existing underground intelligent terminal, a design scheme of underground intelligent terminal based on WiFi was proposed, design of hardware and software of the terminal were introduced in details. The terminal integrates environment information collection，personnel location and information interaction together, which uses collected temperature and gas concentration to achieve real-time perception of mine environment and personnel information, and send RSSI of AP to monitoring center in order to realize personnel location. The miner can read scheduling information, rescue information sent by monitoring center and can send alarm information through the interactive interface. The terminal has characteristics of low power consumption, good real-time performance and strong flexibility, which has good application prospects.