In order to further explore the influential factors and dynamic characteristics of turnover motion in the automatic orientation of pointed end and blunt end of the ovoid agricultural products, to reduce actual test costs, a digital virtual prototype (simulation model) consisting of ovoid products, conveying roller and guide rod is designed and built. Using the ADAMS simulation technology, the process of the ovoid body's turnover motion is simulated, and a measurement method for the rolling distance and effect distance of guide rod in the simulation experiment is created. On this basis, the simulation values and actual test values under different long axis L, short axis B, egg-shaped angle θ, center distance E of the conveying roller, bending angle γ of the guide rod, and conveying speed v are compared and analyzed. The results show that the actual results and the simulation results have the same variation discipline, and the relative error is within 10%. The established simulation model is credible and efficacious, using this model to study the discipline of turnover motion is feasible. It lays the foundation for the research of the oval body agricultural product's turnover motion simulation.