Abstract:Rough fracture surface is of characteristics of fractal and can be considered as congruence of the upper and lower fracture surfaces. The rough fracture surface and the distribution of fracture apertures can be simulated by fractal theory. The simulation is made on solute transport in rough fractures by characteristic FEM based on the fracture face and fracture apertures simulated by using fractal theory. The result of simulation shows that it is more actual to simulate solute transport in fractures with its roughness considered. In contrast with the solute transport in smooth fractures with average aperture,the frontal surface of concentration in a rough fracture is more behindhand and is of characteristics of nonuniformity and anisotropy.