The behaviors of dynamic strength，dynamic shear modulus，and damping ratio of undisturbed and remolded marine silt by dynamic triaxial and resonant column tests are analyzed.The test results show that under the same conditions，the dynamic shear modulus and reference shear strain of undisturbed silt are greater than those in the remolded soil，although the damping ratios are closer in value.In addition，the normalized G/Gmax-γ/γr and λ-γ/γr can weaken the influence caused by disturbance of the remolded silt. Moreover，the stress ratio of liquefaction and dynamic strength of undisturbed marine silt are smaller than remolded soil in the same conditions.Along with the increase in consolidation ratio，the difference in dynamic strength of undisturbed and remolded silt decreases under the same equivalent vibration cycle times.Further，the pore water pressure of remolded silt increases sharply，and the pore water pressure of remolded soil tends to be stable when the samples are about to be damaged.