Abstract: Real-time network monitoring is an important means to ensure the safety of coal industry. Traditional monitoring methods use battery power supply or wired power supply. However, the use of batteries is strictly limited, and replacement is forbidden in industrial sites. Wired power supply cables are bulky and difficult to be used in large areas. In this paper, a self-powered multi-node wireless sensor monitoring system is proposed, which can harvest vibration energy of coal mine industrial equipment to meet the needs of the system itself, and can collect the operation parameters of the key parts of industrial equipment in order to judge the working condition. The vibration energy is collected by piezoelectric-electromagnetic-triboelectric energy harvester, which can power the temperature sensor, acceleration sensor and wireless transmission circuit in the wireless sensor node. Different nodes transmit the signal detected by the sensor to the wireless receiver through the network, and then display and store it through the host computer. This paper mainly studies the overall design scheme of the self-powered wireless sensor monitoring system, and explains the self-powered technology and network realization. Finally, the feasibility of the system is illustrated by the application in the actual working environment. The realization of this system is of great significance to intelligent monitoring of coal machine equipment working condition and intelligent mining of coal industry.