In recent years, the performance of a computer has been improving by leaps and bounds. Numerical computation technology is developing greatly with improvement in the performance of a computer. On the other hand, the object for analysis becomes complicated and the meshing is more and more difficult. The Free Mesh Method which is one of the mesh-less methods is considered to make large-scale analysis more easier without the so-called meshing process. This paper describes the 3D animation system which is intended to be a post-processor for dynamic analysis with the free mesh method.