Abstract: There are some problems in the monitoring system of the existing belt conveyor idling fault ，such as, wiring，communication difficulty，Inaccurate of Position Monitoring. To solve the problems，A fault monitoring system based on ZigBee wireless sensor network is designed.Based on the ZigBee wireless sensor network, the temperature collection of the roller shaft end and the network transition were realized and uploaded to the host computer designed by the labview through the serial port.thus, the dynamic real-time online monitoring was achieved. After field testing, the system achieves the purpose of fault location accuracy and automatic monitoring.