Fixing precast block for aerated block wall door and window frame

The utility model discloses an aerated block wall door and window frame fixing precast block which comprises a solid concrete block, an aerated concrete block is fixed at each of two ends of the solid concrete block, and the solid concrete block and the aerated concrete blocks are reinforced through tie bars embedded inside the solid concrete block and the aerated concrete blocks. The building block is simple in structure and convenient to prefabricate, the solid concrete building block is only arranged at the door and window fixing position, the problem of waste of concrete materials is avoided, the overall weight of a single building block is reduced, constructors can conveniently carry and install the building block on site, meanwhile, the building block can be better combined with an adjacent aerated concrete building block, and the construction efficiency is improved. The partition wall is good in building forming quality and convenient to build, and the construction period and the labor cost are saved.