Abstract: The paper introduced a design scheme of monitoring node of coal mine gas, temperature and humidity based on ZigBee protocol and CC2430 chip. The node firstly uses model LXK-3 gas sensor and model SHT11 temperature and humidity sensor to collect information of gas concentration, temperature and humidity, then processes relational data through 8051 microcontroller embedded in CC2430, and finally realizes ZigBee wireless communication between the nodes by use of functions of data receiving and sending of CC2430. The testing result showed that the node can transmit data correctly.