Abstract: To study the vertical residual bearing capacity and axial compression stiffness of the circular concrete-filled double-skin steel tubular (CFDST) long columns after lateral impacts, a circular CFDST long-column member model is established by using the finite element software ABAQUS. The column is firstly loaded under the axial force-impact coupling interaction, and then the quasi-static vertical axial compression of the damaged column after impact is carried out. The results show that the failure of the column after a lateral impact is overall buckling as a whole and accompanied by local buckling near the impact site. The vertical load-displacement characteristic curve can be roughly divided into three stages, elastic rising, reaching the peak, and falling. The ultimate bearing capacity and axial compression stiffness of the column are reduced, but the ductility is improved after an impact. The residual bearing capacity coefficient and the residual axial compression stiffness coefficient are most significantly affected by the impact energy. When the impact energy increases by 8 times, the residual bearing capacity coefficient and the residual axial compression stiffness coefficient decrease by about 36.2% and 48.2%, respectively. Lastly, the formulas for calculating the vertical residual bearing capacity coefficient and residual axial compression stiffness coefficient of circular CFDST columns are proposed.