The　present　study　aims　to　investigate　the　effect　of　microstructure　and　texture　on　mechanical　properties　of　resistance　spot　welding　of　high　strength　steel　22MnB5　and　5A06　aluminium　alloy　as　a　function　of　welding　parameters.　The　pseudo-nugget　zones　(NZs)　at　the　steel　side　have　undergone　full　recrystallisation　with　a　fine-grained　ferrite　structure　containing　a　small　amount　of　retained　austenite　and　a　high　hardness　of　approximately　500　HV,　which　is　a　35%　increase　in　hardness　compared　to　the　base　material　(BM)　with　fine　lath　martensitic　structure.　The　NZs　at　the　Al　side　contain　both　a　recrystallisation　texture　and　shear　texture.　Higher　tensile　shear　strength　with　increasing　weld　time　could　be　linked　to　the　random　texture　at　the　Al　side.　The　highest　tensile　shear　strength　was　achieved　at　an　intermetallic　layer　thickness　of　4　mm.