Based on the lotus root slicing machine of crank-slider style designed by the authors, the virtual prototype model of slicing machine has been established by the software of PRO/E, and the kinematics and dynamics performances of the slicing machine were studied by utilizing ADAMS. At the same time, analyses were made on the changes of the cutting velocity and acceleration of blade, the force condition of cutting, the vibration condition of workbench based on the cutting force of sliced lotus root and inertia force of mechanism. The results show that the optimum period for the cutting was 0.15s~0.25s; The horizontal component with support reaction of crankshaft bearing was the major factor that affected the system vibration; The vertical component of the force acting on blade during the cutting was the main cause to lead the bevel edge in the piece of lotus root. The research results can provide a reference for the optimized parameters of the cutting mechanism of lotus root.