The lateral deformation of a long-term service high pile wharf leads to pile top dislocation,which affects the connection between the pile cap and the crossbeam,and put the engineering safety of the wharf in a dangerous state.Based on a long-term service wharf in Tianjin port,we carry out the long-term monitoring of structural displacement and deep soil horizontal displacement,and conduct the numerical simulation analysis based on the monitoring results to study the corresponding laws of soil horizontal displacement and settlement and pile horizontal displacement and settlement of the slope-structure system of long-term service high pile wharf under the influence of creep,and study the influence of different fill thickness behind the slope on the lateral deformation of the slope-structure system.The results show that soil creep is an important factor influencing the lateral deformation of the slope-structure system of the high pile wharf in long-term service,and the creep deformation of the soil is mainly concentrated in the settlement of the rear yard and the vertical displacement of the silty clay on the surface of the slope.The creep rate of the bank slope soil decreases with increasing time.The vertical displacement of the pile body decreases continuously from the top to the bottom of the pile;the most unfavorable position of the wharf structure is near the top of the pile,and the difference in horizontal displacement of each row of frame pile base is obvious,the more inward the pile is.With the increasing thickness of the fill,the lateral deformation of the slope-structure system increases continuously.