Aiming at the problem of serious wear of the hammer head and easy loosening and falling of the hammer head in the operation of the wheeled crusher. Based on the model of PLM4000 crusher, three kinds of hammers with different blade angle were established by parametric modeling method, and the ANSYS/LS-DYNA is used for dynamic simulation and analysis to obtain the force-time curve of the two-way force and resultant force between the hammer head and the material, as well as the variation coefficient of the contact force between the hammer head and the hammer body. The analysis results show that compared with the existing middle-edged hammerhead, the average contact force between hammers and the material of the large-edged angle hammer head and the small-edged angle is reduced by 4.5% and increased by 6.69%;the variation coefficient of the contact force with the hammer also decreases with the increase of the angle of the blade, from 0.145 of the small blade angle to 0.077 of the large one.That is to say, increasing the angle of edge angle can significantly reduce the load fluctuation of hammer head and hammer body, which provides an important reference for the follow-up optimization design of hammer shaft assembly of crusher.