Triangulation of scattered data is a very important problem in reverse engineering research. Based on a kind of dynamic neural network——Growing Cell Structure(GCS), a new method of triangulation is presented in this paper, and some modification processes are also given in addition to constructing a triangle mesh with good shape. Compared with other triangulation methods, this method is relatively easy to realize and can dispose of noisy 3D data directly. The amount of vertexes in mesh can also be calculated with this method, so we can control the size of mesh in advance. Finally, a practical example is given to prove its effectiveness.