The invention discloses an energy-saving insulation structure of a lighting window and a construction method thereof. A reinforcing
keel is arranged in a filler wall around the window, waterproof cloth is arranged on the joint, the filler wall is connected outside a frame column to form a one-piece
palisade structure encircling a frame column
system, the frame column is partially embedded in the filler wall, the filler wall is a cast-in-situ sandwich wall, and a lightgage steel
keel anchored with floor slabs at the two sides is arranged in a light porous inorganic core material. According to the energy-saving insulation structure of the lighting window and the construction method thereof, the functions of the keels, also as the wall keels, and an external window
subframe are reinforced, the material is saved, and the phenomenon of '
thermal bridge' is avoided. The waterproof cloth is arranged additionally, so the
air tightness and waterproof permeability of the
palisade structure are improved, the heat preservation performance is improved by 2-5%, and the
air tightness is improved by 5-10%. The
palisade structure outside the building and the exterior wall insulation are integrated, industrial wastes are recycled as raw materials to form a non-flammable inorganic foam insulation material of which internal abundant porous structures have excellent heat preservation and sound insulation effects, the construction is simple, form stripping does not needed, the construction efficiency of the building is increased by 30%, and the cost is lowered by more than 10%.