The geological sedimentation simulation platform is an important device for quantitatively studying geological sedimentation theory. In order to meet the research needs of large-scale, refined, and quantitative sedimentation simulation, a geological sedimentation simulation platform that can perform all-round attitude adjustment motion based on a 4-PSE parallel mechanism was designed, and its kinematic characteristics were studied. Combined with the working principle of the simulation platform, the degrees of freedom of the 4-PSE parallel mechanism were calculated, and the Kinematics equations of the simulation platform were derived. The virtual prototype model of the simulation platform was established in ADAMS software, and its Kinematics parameters were theoretically verified using the Kinematics simulation results. The workspace constraints of the simulation platform was analyzed, its workspace was obtainecl, and the influence curve of relevant structural parameters on the workspace was drawn. The research results provide a theoretical basis for the structural design optimization of subsequent geological sedimentation simulation platforms and the combination of multiple platforms.