To describe and smooth curves and curved surfaces in finite element simulation, a method
for modifying die surfaces in plate deforming simulation is proposed. The description of the surfaces
is based on point representation, and the fairness of a surface is represented with the difference
between the original points and those after modification. A simulation system is implemented by use
of finite element software ABAQUS. An example of simulation is presented, showing that the
proposed method and the simulation system is applicable in die surface modification assisted with
finite element method.