The purpose of this study is to grasp the relationship between the absolute permeability and fractal dimension of fracture system examined by experimental approach. For this purpose, we prepared eight types of artificially fractured system and measured absolute permeability by pressure pulse decay method, and calculated fractal dimension by box counting method. The correlation function between absolute permeability and fractal dimension is $K=2.3386D^{2.6436}$. The fractal dimension range of its application is lower than 1.5. The equation can be used as the permeability estimation with fractal dimension appeared on cross section which is perpendicular to direction of fluid flow, even if this equation has limits on using artificially fractured cores.