The slurry used in the construction industry has important research value. According to the increasing uniformity requirement, the development status of slurry mixing technology has received more attention and analysis. Furthermore, the comparative study of different mixing structures based on dynamic simulation has been proposed and studied. Firstly, the characteristics of mixing structure is analyzed and the uniformity of slurry is characterized. Secondly, a threedimensional model of the simulation and analysis of the stirring blade is established. Then, the dynamic calculation and analysis are carried out based on the typical stirring process theory. Finally, the structural characteristics of different stirring blades is compared through actual simulation analysis, and the results could show which structure is optimal. The results prove that the bi-axial mixing structure has the characteristics of high stirring efficiency and low deposition degree, which can be suitable for the pulping process in the sealed environment.