This paper proposes to use the cohesive bilinear contact model that comes with ABAQUS to simulate the bond-slip between steel grouting material; Establish a grouting sleeve connecting steel bar specimen model to simulate the mechanical performance of the end defect specimen and the middle defect specimen under different anchorage lengths, through the stress cloud diagram, Analyze the force transmission mechanism, reveal the influence mechanism of the end defect and the middle defect on the mechanical properties of the grouting sleeve.