In light of the demand of safety mechanism in underground mines,especially in underground coal mines,this article proposes a design scheme of underground miners’ life information and environmental information monitoring system,which realizes the real-time acquisition,wireless transmission,surface real-time monitoring and management of underground miners’ life information and the working environment parameters such as gas,carbon monoxide and humiture by a portable terminal monitoring device carried with miners.It can provides a dependable monitoring system for ensuring the safety of underground operators.