Abstract: Some problems of coal mine safety monitoring system of Shenhua Group in application were pointed out, for example, operating maintenance was difficult, signal transmission distance could not meet application requirements of super long working face, there were data losing and false alarm, etc. According to Technical schemes of upgrading of coal mine safety monitoring system, technical status of coal mine safety monitoring system of Shenhua Group was analyzed as well as gap between the system and the schemes. Upgrading measures about coal mine safety monitoring system of Shenhua Group were proposed from aspects of construction principle, sensor, substation and software.