Abstract: In view of problems that existing tension monitoring system of scraper chain of scraper conveyor is easy to damage, cannot transmit data in real-time, accuracy is poor and power consumption is excessive, a wireless tension monitoring system with low-power consumption of scraper conveyors and wireless communication layout scheme suitable for the system were designed. The system is encapsulated in the scraper and the middle plate, which will not be impacted by ore and eroded by mine water. At the same time, a signal overflow outlet can be processed for electromagnetic wave to pass through, so that the tension data can be transmitted wirelessly. The tension acquisition device encapsulated in the bottom pressing plate obtains tension information through the strain gauge pasted on the scraper chain, tension information is transmitted wirelessly to the data receiving device encapsulated in the middle plate, which then uploads the data to the upper computer or LCD display to realize real-time tension monitoring. The experiment results show that through cooperation with modified parts of the scraper conveyor, the system can avoid impact of mineral,erosion of mineral water and electromagnetic interference, and can complete real-time tension monitoring in harsh environments, and can effectively solve the problem that existing scraper chain tension monitoring system is easy to failure and ca't upload real-time tension data in harsh environments. The energy consumption of the tension acquisition device which introduces proximity switch and dormancy mechanism is reduced to the minimum, and the power consumption in dormancy state is about 1/40 of that in working state, which greatly extends service life of the system.