A series of coupled hydro-mechanical triaxial tests on granite specimens were carried out in order to investigate the permeability of dense rock under triaxial compression using servo-controlled triaxial testing equipment. The variations of the permeability with the confining pressure,the seepage pressure and the volumetric strain in the complete stress-strain process of the rock were obtained. The experimental results showed that the stress-strain relation exhibited the behavior of brittle failure. The str...