To numerically investigate the mechanical properties and damage mechanism of precast concrete （PC） columns with grouted sleeve connection subjected to impact loadings， the refined finite element model of PC column under lateral impact was established and verified against previous impact test results. The differences between the impact response characteristics of PC columns and cast-in-place concrete （CIPC） columns were studied. The influence of impact position， axial load ratio， strengths of joint and grout sleeve connection on the impact performance of PC columns was examined， and the damage characteristics of PC columns were analyzed from the perspective of curvature distribution. The results show that PC column and CIPC column exhibit similar nonlinear mechanical behaviors under the same impact conditions. However， the force transfer mechanism and failure patterns of the columns below the impact point are quite different. In addition， the curvature distribution could be utilized to describe the damage concentrations of the impacted columns. The change of impact position will vary the resistance mechanism of PC columns，and the axial load ratio can improve the anti-impact capacity of PC columns to a certain extent. Due to the significant local effect of impact loadings， the strengths of joint and grout sleeve connection mainly affect the damage mechanism of the column near the joint.