The optimization of farming works structure and working method can efficiently reduce the traction resistance of machines, which is meaningful for the industrial field. In this paper, the finite element method (FEM) was used to establish the three-dimensional model of cutter and soil contact analysis, and the M-C constitutive model was implemented in the commercial FEA package, ABAQUS. The relationship between cutting force and different cutting speeds, cutting acceleration, and cutting depth was studied, which provided a useful reference for predicting the process of tool-soil interaction and designing reasonable tillage components. Results reveal the validity of the concept of predefined failure surfaces in simulating soil-tool interaction and the significant effect of cutting acceleration on cutting forces.