With the integration of geological research and big data, massive geological data with “multiple heterogeneity, high capacity and low value density” has been formed. Especially in urban construction, the monitoring data of geological deformation which reflects the ground surface and land subsidence features large capacity, time-varying property and complex dimensions. How to use visualization techniques to serve geological research analysis and problem decision more intuitively has become a hot spot of data visualization research and application in the field. To solve the problem, this paper presents a visualization method to display the monitoring situation of regional subsidence deformation under the Web three-dimensional scene constructed by the fusion of Cesium and GeoServer with the data collected by Interferometric Synthetic Aperture Radar (InSAR). Regarding the effect of deformation layer display, we create a way to dynamically change the transition color of the point cloud data from deformation monitoring, which is different from the single rendering effect of Google Earth. It is compared with ENVI/SARscape in terms of visual analysis interaction. The results of practice and application show that, in comparison with traditional methods such as two-dimensional display and integrated display of data imported from Google Earth, the proposed method can display deformation monitoring results more intuitively. In addition, it has more abundant man-machine interaction modes, which thus provides a better auxiliary decision-making function for geological professionals.