In order to research the influence of different connection properties on the dynamic characteristics of the structure，we use software of ABAQUS to establish a refined finite element model，carry out the process analysis of the overall structure of the gravity piled wharf with low pile cushion caps formed by two methods of anchoring and frictional connection，and study the seismic response law of the structure corresponding to the two connection properties.The results show that at the end of the earthquake，the residual displacement of the anchored connection structure is smaller than that of the friction contact structure. The difference between the horizontal peak acceleration of the friction contact structure is larger than that of the anchor connection structure. The maximum and minimum tensile （compressive） stresses of the anchor connection structure are smaller than those of the friction contact structure. The maximum dynamic earth pressure value and the ratio of the maximum and minimum dynamic earth pressure of the friction contact structure are larger than those of the anchor connection structure.