The turning process for tool and soil contact and energy transfer is very important. Due to the flow in the boundary area between the tool and the soil during the turning process, it is complex to simulate the soil-tool interaction. Benefiting from the Lagrange meshfree feature of the smoothed particle hydrodynamics (SPH), modeling the interaction between soil and tool with an SPH model is promising. In this talk, we present a soil-tool interaction SPH model by considering the elastoplastic material property of the soil. A numerical example of soil-tool interaction is presented and validated by experimental results in this study. We compare the experimental observations with the numerical modeling results and find that the numerical error of the peak height and the horizontal distance of the soil is about 2.56% and 3.37%, respectively, indicating that the proposed SPH model can reproduce the soil turning process accurately. The simulation results also demonstrate that: (1) When the turning speed is increased, the turning resistance does not change significantly but leads to a more sufficient mixing of the soil; (2) There exists a critical turning angle above which the resistance increase significantly associates with a larger angle; (3) Increasing the burying depth of the tool helps to improve the mixing effect; however, leads to larger resistance as well.