A new method is proposed to fill the 3D contour field. It can be used not only to render the filled 3D contour of one datum, but also to render the three-dimensional overlapped contour of various data in the same measuring zone that represent different physical properties on one surface. It seems that the filled contour field of outer layer data is an infinitely stretched semitransparent coverage that is paved on the existing surface. This can intuitively reflect the relationship between various physical data. As the complex phenomenon will occur caused by the intersection or superposition of contours of different data, more factors should be considered in filling color of the contour field. This technique is realized on the basis of regular grid data, and its principle can be used in Triangle Mesh.