A variety of analytical techniques is indispensable for the development of earth sciences.In particular, with the great advances in modern technology,more advanced modern analytical testing methods play a role in earth sciences,industrial X-CT (X-ray Computed Tomography)is one of important modern test technology.It could intuitive display geological rock samples interior structure,which demonstrates two-dimensional or three-dimensional information,we could use two-dimensional images to take full digital processing and three-dimensional visualization analysis.Based on the principles and methods of industrial computed tomography (CT )technology,studying pore structure of Fujian Kuiqi geode granite KQ-6 sample in South China metallogenic belt,acquiring two-dimensional CT image sequences of the sample,by means of digital image processing analysis tools,finally we obtained the sample porosity and pore size statistics distribution,which the measured value of porosity is 8.14%,and pore size is 0.4~2 mm;Thus, carrying out three-dimensional visualization study on pore structure of geological samples to obtain topological graph of porous connection of the samples, can intuitively demonstrate interior pore connectivity of samples,which is vital for depiction on the interior structure characteristics of geological samples and ore-forming fluid.%地球科学的发展与各种分析测试技术密不可分。尤其是，随着现代科技的长足进步，产生了更为先进的现代分析测试手段使其在地球科学中的作用日益为世人瞩目，工业X-CT（X-ray Computed Tomography）测量技术即是其中之一。它具有形象、直观显示地质岩矿样品内部的、无损的、原位的二维或三维（立体）信息等特点，可实现对地质岩矿样品CT二维断层图像进行全数字化的三维可视化处理与分析。本研究针对华南成矿省福建魁歧晶洞花岗岩KQ-6样品的孔隙结构，依据工业X-CT 技术的原理及方法，获得了样品的 CT 二维序列图像，借助于数字图像处理分析工具，得到了样品的孔隙度和孔径分布统计结果，孔隙度测量值为8．14％，孔径尺寸0．4～2 mm；基于此，开展了该地质样品的三维可视化孔隙结构研究，获得了样品的孔隙连通的拓扑图形，直观展现了样品内部孔隙连通性，这对精细刻画地质样品内部结构特征及成矿流体的研究具有重要意义。
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