In this paper,the principle by which how to create automatic on-line load measurement system for mine truck using the laser-radar survey technology is introduced.In combination with radio frequency marking card identification technology,the automatic on-line measurement system can implement the measurement of loaded ore weight for ore-carrying trucks in the whole open pit and the data statistics of ore weight.This automatic measurement system is very important for improve the truck's loading coefficient and the accuracy of ore burdening in the mining area.