Taking borehole data as source data,we generated regular grid data of relevant strata using Kriging interpolation method in this paper.3D visualization of specific strata is realized based on IDL.At the same time we also use algorithms of photometry and colorimetry to achieve visual effects.In order to enhance the photorealistic of strata visualization,some technologies were adopted such as blanking,illumination model,color model,etc..The system functions include real-time zooming-in,zooming-out,rotating,pa...