Abstract: In order to solve the problem of low ore recovery rate in Gong Changling Mine under the condition of large oblique angle and slippery below rock,according to actual application of Gongchangling ore mine,the paper researched the effect of setting-ore jaws towards scatters moving regulations and modeled for D.Jolley on the base of analysizing device requirement and function of simulation system.We developed the simulation system with C#,realized a series of processes about big cross section setting-ore.The system can simulate many projects and choose the excellent from the simulation results.