Abstract: Combined with the geological conditions of hard rock roadway in No.4 Mine of Pingdingshan Coal Company, and adopting theoretical analysis and the LS-DYNA numerical simulation software, the paper analyzed the influence of shaped charge jet effect by taper angle of shaped charge device, and simulation analyzed the rock breaking effect by shaped charge blasting. The analysis results showed that the jet which developed by shaped charge device with taper angle of 50° was stable and shaped charge effect was better. Compared with the conventional blasting, the rock breaking ability of energy-gathered blasting was improved by more than 50%, and at the same time, the crack propagation non-energy gathered direction was suppressed, which made the scope of broken ring reduced by more than 30%.