The particle discrete element method has been gradually applied to geotechnical engineering with the development of the ability to calculate. Complex particle shapes are commonly found in nature, making it crucial to investigate the physical and mechanical properties of rock and soil granular materials. In this context, in order to discuss the current application status of the particle discrete element method in geotechnical engineering. Furthermore, two ways of simulating particle shapes in the discrete element method were introduced. The simulation of typical particle shape. The simulation of real particle shape. The problem of the discrete element method was summarized based on existing research results, and the simulation of particle shapes in the application prospects of geotechnical engineering using the discrete element method was proposed.