Fluxless　fiber　laser　fusion　welding-brazing　with　rectangular　spot　was　used　to　produce　joints　between　6061-T6　aluminum　alloy　and　galvanized　steel　with　filler　powder.　The　joints　were　evaluated　by　metallurgical　analysis　and　mechanical　properties　testing.　The　results　indicated　that　favorable　joint　with　good　figuration,　no　crack　and　pore　were　present　with　optimized　welding　parameters.　Furthermore,　the　joint　was　characterized　by　layered　and　dendritic　microstructure.　The　layered　structure　is　composed　of　Fe2Al5.　The　dendritic　part　is　identified　as　T1　and　Fe4Al13　phases.　In　addition,　failures　were　observed　in　the　weld/　steel　interface　with　brittle　characteristics　from　the　tensile　test.　The　mechanical　resistance　of　the　joint　is　determined　by　the　ratio　of　width　of　weld　interface　and　the　maximum　thickness　of　interme-tallic　compounds　layer.