In　order　to　manufacture　tungsten-copper　complicate　parts　with　high　precision　and　densification,　two　different　characterizations　of　tungsten　powder　balled　with　copper　powder　are　manufactured　by　selective　laser　melting　(SLM).　The　dimensional　accuracy,　surface　morphology　and　microstructure　of　specimens　are　studied.　The　composite　powder　containing　irregular　tungsten　powder　with　D50=5　μm　causes　non-uniform　rolling　powder　and　serious　sparks　occur　in　sintering　process.　With　the　increasing　of　mass　content　of　W　from　60%　to　75%,　the　height　shrinkage　increases　from　70　μm　to　220　μm,　the　length　and　width　increase　from　50　μm　to　150　μm,　from　70　μm　to　150　μm,　respectively.　The　surface　morphology　evolves　from　adhered　debris　to　balling　phenomenon,　pores　and　W　particle　agglomerate　exist　in　the　microstructures.　The　composite　powder　containing　regular　tungsten　powder　with　D50=20　μm　shows　uniform　rolling　powder　process　and　no　sparks　occur　in　sintering.　With　the　increasing　of　mass　content　of　W　from　60%　to　75%,　the　height　shrinkage　increases　from　70　μm　to　220　μm,　the　length　and　width　increase　from　20　μm　to　50　μm,　the　surface　morphology　evolves　from　sound　to　slightly　melt　fracture　and　the　particle　rearrangement　is　obvious.　The　regular　tungsten　powder　with　D50=20　μm　is　more　applicable　to　manufacturing　WCu　components　by　selective　laser　melting　than　the　irregular　tungsten　powder　with　D50=5　μm.　©　2016,　Chinese　Laser　Press.　All　right　reserved.