Visual analysis of tsrapdown inertial navigation information model is studied in this paper. With the increasing demand for the accuracy of strapdown inertial navigation, gravity disturbance becomes the largest residual error of high-precision inertial navigation system. In this paper, the gravity disturbance is quantitatively analyzed according to the intelligent fusion spherical harmonic model. It is then equivalent to the resolution of high-precision acceleration and is a main error source of high-precision inertial navigation system. The Terrain system in Cesium is a technology that also supports the generation of terrains from streaming tile data. It supports two types of terrains, STK WorldTerrain and Small Terrain. We then test the combinations of the mentioned models.