Abstract: GPS receiver is installed on the self-mobilized bridge spreader,in order to achieve multi-angle and multi-directional synchronized movement of 7 self-moving crawlers on self-mobilized bridge spreader bridge along horizontal direction of heap leaching field,high consistency of displacement and angle during the synchronized movement of the discharge cart on self-mobilized spreader bridge and movable seal tape machine,and control the moving speed of mobile discharge cart on the moving section on the tracks above the self-mobilized spreader bridge and on different locations,when large-scale self-mobilized spreader is operational.The location coordinates of 4 GPS receivers are precisely located by GPS based on real-time kinematic technology.PLC controller converts the location information of GPS receivers into numbers on the heap leaching field coordinate system,and transmits location information by connecting DP communications.Finally,synchronized movement of multiple self-moving crawlers on self-mobilized spreader bridge and synergic operation between each component are realized by software programming,the rate of mechanical failure during the overall movement of spreader bridge is reduced,and the annual cost can be saved by about 130 000 dollars.