The study is to investigate the soil dynamic strength of Peitou region in Taipei Basin. These tests were have been performed by self-developed stress-controlled triaxial mechine. In order to evaluate the post earthquake settlement, the drained valves are opened after dynamic loading completed, then and excess pore water pressure dissipates with time and induce volumetric strain. Testing results indicate the isotropic consolidated speciman failure at large cyclic axial strain, the anisotropic consolidated speciman failure at large residual axial strain. The excess pore water pressure raising-rate increases with the increasing degree of stress reversal. The post cyclic volumetric strain also increases with the increasing maxium shear strain in the stress-controlled test.