ABAQUS,a finite element program,is selected to simulate vertical load condition of slope rock-socketed pile in port engineering in mountainous river.The modeling process includes drilling in rock slope,pouring pile concrete,bearing load condition of pile foundation etc.The nonlinear effects of material and pile-rock contact are taken into account when three-dimensional models of the slope rock-socketed pile system are established.Based on the analysis for parameters of slope angle,pile diameter and socketed depth etc,the influence degree of slope angle on vertical bearing capacity of rock-socketed pile is put forward,and the vertical bearing characteristics of slope rock-socketed pile are analyzed.The research results show that the vertical bearing capacity of slope rock-socketed pile is obviously affected by loss effect of rock mass before pile and enhancement effect of rock mass behind pile when the slope angle is changed.In engineering design,the influence of slope angle,pile diameter and rock-socketed depth on the vertical bearing capacity of slope rock-socketed pile should be considered comprehensively,and reasonable design parameters should be determined through the comparison of economy and applicability.