The utility model discloses an aluminum alloy building templates splices subassembly, include the multiunit template of transversely laying along the floor that will pour, be equipped with the supporting beam that the multiunit of being connected with the template has the breach between the template, two adjacent supporting beam's crossing punishment do not be equipped with one with the fixed fixed block that has the guide way of a supporting beam, be equipped with between two fixed blocks one with the breach adaptation, the top surface acts on the top tie member that has the spread groove on the floor, the common slab form who is used for pouring the floor that constitutes of top surface, template and a supporting beam of top tie member, be equipped with in guide way and the spread groove with fixed block fixed connection's connecting piece, still including locate subaerial and top and the top tie member is pegged graft is used for the template and props up the adjustable support bar of supporting beam jack -up. The utility model discloses simple structure, the concatenation is convenient, and efficient, overall stability is good, and the scaffold frame is small in quantity, and economy is high -efficient.