Aiming at the high cost and low reliability of the wired temperature monitoring network in goaf, a design scheme of wireless temperature monitoring system based on Mesh network was proposed. Taking the communication mode of the wireless Mesh network as the core, the collector and the low-power design were designed. The receiver was designed by combining wired and wireless transmission, and the upper computer based on LabVIEW was developed. The system had the advantages of convenient deployment, large array coverage and robustness of the monitoring network, and met the requirements of the monitoring period of the goaf, so that the in-situ manager could clearly understand the temperature of the goaf, when the high temperature point was detected. It could take timely prevention and control measures to ensure safe and stable production of coal mines.