To improve the mechanical and current carrying tribological properties of Cu-10Sn alloy,the Cu-10Sn alloy was prepared by selective laser melting (SLM).The microstructure and hardness of Cu-10Sn alloy were analyzed,and the effects of different loads and currents on the current carrying tribological behavior of Cu-10Sn alloy were studied.The mechanism of tribo-electric performance was analyzed by scanning electron microscope.The results show that compared with the load of 10 N,the average friction coefficient of the friction pair increases,the contact resistance and arc energy decrease and the wear are deepened at 30 N.The surface of Cu-10Sn alloy rubbed with GCr15 ball is oxidized,and the copper element of which is transferred and adhered to the ball forming adhesive wear.Compared with pure mechanical friction behavior,the wear marks are deepened,the amount of adhesive and oxide increases obviously on the surface of Cu-10Sn alloy,and the friction coefficient and wear volume change significantly with current.The arc ablation occurs on the surface of the wear marks under low load and small current.When the current is 10 A,the lubrication of the oxide film formed on the wear surface slows down the wear of the material.The wear mechanisms are mainly fatigue wear and adhesion wear without current,and the electrochemical oxidation and adhesive wear are significantly enhanced with current.This research can provide reference for the preparation of Cu-Sn alloy by SLM technology and its application in contact lines and other electrically conductive contact materials.