The invention discloses a right hexagonal steel-concrete combined hollow double lattice floor and a manufacturing method thereof. In the floor, a frame formed by a hexagonal column grid forms the six sides of a floor right hexagon, the length L of the diagonal of the right hexagon is more than or equal to 30 meters and less than or equal to 48 meters, steel-concrete combined hollow beams are connected in the frame of the hexagonal column grid and are parallel to the sides of the hexagon respectively and crossed two by two to form steel-concrete combined hollow beam large right triangular grids with internal three-directional cross, and the structural height of the steel-concrete combined hollow beams is one twentieth or twenty-fourth of the length L of the diagonal; and the inside of each large right triangular grid is provided with three-directionally crossed concentrated ribbed beams which form small right triangular grids, and floor plates are covered on the large and small right triangular grids. The right hexagonal steel-concrete combined hollow double lattice floor has the advantages of good structure integrity, small structural height, small space occupation, concrete, small steel consumption and the like and is particularly suitable for constructing large-span polygonal flat surfaces and multilayer and multifunctional halls.