Friction　stir　welding　(FSW)　was　introduced　to　join　laser　powder　bed　fusion　(LPBF)　AlSi10Mg　alloys　in　this　study.　Microstructure　and　texture　evolution,　microhardness　distribution　and　tensile　properties　of　the　FSW　joints　were　investigated.　The　evolution　of　grain　size,　grain　boundary　and　misorientation　angles　distribution,　dynamic　recrystallization　and　crystallographic　texture　in　various　regions　of　the　FSW　joint　concerning　base　metal　(BM),　thermo-mechanically　affected　zone　(TMAZ),　upper　part　of　nugget　zone　(UPNZ)　and　low　part　of　nugget　zone　(LPNZ)　was　characterized　by　using　electron　back-scattered　diffraction　(EBSD).　The　analysis　reveals　a　strong　texture　evolution　of　shear　components　on　the　TMAZ,　UPNZ　and　LPNZ　as　well　as　a　fully　recrystallized　grain　structure　on　the　UPNZ　and　LPNZ.　Additionally,　a　gradual　evolution　in　Si-rich　eutectic　from　continuous　cellular　networks　in　the　BM　to　totally　globularized　particles　in　the　UPNZ　and　LPNZ　occurs　in　the　FSW　joint.　The　microhardness　rapidly　decreases　to　the　TMAZ　from　the　BM　through　heat　affected　zone　(HAZ)　reaching　the　lowest　value　of　-65.0　HV　at　the　TMAZ/NZ　boundary.　The　FSW　joint　in　LPBF　AlSi10Mg　alloys　exhibits　an　ultimate　tensile　strength　(UTS)　of　247　MPa　and　an　elongation-to-failure　(EI)　of　8.8%.　The　UTS　of　FSW　joints　is　reduced　compared　to　the　BM,　but　the　EI　has　been　increased　by　160%,　implying　an　improvement　in　tensile　ductility.