The plough surface was re-formed by using Pro/E’s functions based on measured points, which were scaled with 3-D coordinate scale instrument. And then ANSYS/LS-DYNA software was used to carry out the turning dynamics simulation of the tilling plough. The direction of soil velocity was vertical to the surface of plough, and its distribution was like radiating. The distribution of equivalent stress was like isoline, and the data was becoming smaller from the contact point to outer. The results of simulation were verified by the data of experiments in soil bin.