Scratch　tests　were　conducted　on　copper　with　a　conical　indenter.　3D　morphologies　of　the　scratches　were　obtained　by　a　3D　Surface　Profilometer,　and　the　influence　of　normal　force　on　the　scratch　groove　was　studied.　The　results　show　that　width　and　depth　of　the　scratches　increase　linearly　with　the　increase　in　the　applied　normal　force.　When　the　normal　force　is　high,　the　periodic　fluctuation　of　scratch　depth　appears　due　to　the　formation　of　the　dislocation　walls.　At　the　same　time,　the　scratching　process　is　accompanied　by　pile-up　on　both　sides　and　in　front　of　the　indenter.　It　is　found　that　height　and　thickness　of　the　pile-up　at　the　end　of　the　scratch　and　the　height　and　width　of　the　pile-up　on　both　sides　of　the　scratch　increase　linearly　with　the　increase　of　the　applied　normal　load.　The　ratio　of　cutting　to　plasticity　shows　two　deformation　mechanisms:　micro-ploughing　and　micro-cutting,　and　micro　cutting　mechanism　plays　the　dominant　role　in　the　scratching　process,　resulting　in　a　linear　increase　of　wear　rate　with　the　increase　of　normal　load.　The　scratch　hardness　does　not　change　with　the　variation　of　normal　load,　and　can　be　regarded　to　be　a　constant　about　0.77　GPa.　©　2021,　Science　Press.　All　right　reserved.