Abstract: Finite element software ANSYS/LS-DYNA is used to simulate the blasting cracking of soft layered coal body, and the fracturing, crack propagation and energy propagation rules of soft layered coal body are discussed.The results show that the location of gun hole affects the fracture distribution of the lower hard coal seam and also has a great influence on the upper hard coal seam and the soft stratification coal seam.Based on the comprehensive analysis of the theory of explosion energy and wave impedance matching and the simulation results, the conclusion is drawn that there are different optimal locations of shothole fracture in coal bodies with different soft stratification thickness.When the thickness of soft stratification is 50 cm, the optimal location of shothole is 35 cm above the surface of soft stratification from the center of the shothole.