Abstract: A mathematical model of open-pit hauling dispatching was constructed from the view point of minimizing open-pit transportation cost.Based on the theory of swarm intelligence optimization,a method of using particle swarm optimization algorithm to optimize open-pit mining operation plan was proposed in this paper,and the search strategy with double attractor was designed for particles in the calculation process.With MATLAB software as a computation platform,the model was calculated by using computer programming technology.With taking the actual production data of an open pit mine as an example,the effectiveness for using improved PSO(Particle Swarm Optimization) algorithm to solve open-pit hauling dispatching problem was verified.