Abstract: Three-dimension construction and three-dimension visualization of stratum layer are very(important) to obtain and explan information of stratum layer.Combining with the fractal theory and using midpoint displacement fractal interpolation,the paper put forward a modeling method based on array linked list fractal interpolation,which can realize three-dimension visualization of stratum layer model(under) the support of OpenGL.The practical application showed that the modeling method is simple in(realization,) quick in construction,and wide in application range.