In　the　present　research,　spherical　W-Mo　alloy　powder　for　additive　manufacturing　was　successfully　synthesized　by　spray　granulation　(SG)　in　combination　with　thermal　plasma　spheroidization　(TPS).　Firstly,　W　and　Mo　particles　(1-3　mu　m)　were　banded　together　through　SG　and　formed　porous　agglomerated　powder　with　desired　particle　size　distribution　and　flowability.　The　porous　agglomerated　W-Mo　powder　was　subsequently　melted　through　thermal　plasma,　W　and　Mo　dissolved　together　and　formed　solid　solution　accompanied　with　powder　densification　during　TPS.　Through　optimization　of　the　process　conditions,　the　spheroidized　W-Mo　alloy　powder　exhibits　homogeneous　element　distribution,　low　oxygen　content　(similar　to　0.08%),　and　good　flowability　(10　s/50　g),　which　meet　the　demand　for　laser　powder　bed　fusion　(LPBF).　Remarkably,　nearly　full　dense　W-Mo　alloy　with　few　pores　could　be　fabricated　by　LPBF　based　on　the　spheroidized　W-Mo　alloy　powder.