Light-aggregate-concrete composite insulation building block and making method of light-aggregate-concrete composite insulation building block

The invention relates to a light-aggregate-concrete composite insulation building block which comprises a brick (1) and blind holes (4). Double rows of through holes (2) symmetrically distributed along the central axis are formed in the inner side and the outer side of the brick (1) in the length direction. The sides of the through holes (2) are stagger. Insulation boards (3) are inserted into the through holes (2) respectively. The blind holes (4) are formed in the inner side of the brick (1) and arranged to be in two rows, and one portion of the brick (1) is additionally arranged between the two rows of blind holes (4). The brick (1) comprises, by weight, 16% to 20% of cement, 30% to 35% of fine gravel, 25% to 30% of mountain flour, 10% to 15% of fine coal cinder, 6% to 12% of gypsum powder or lime mortar and a proper amount of water. According to the light-aggregate-concrete composite insulation building block, the insulation boards are correspondingly and additionally inserted into the through holes, cold-heat bridges are prevented through the dual-blocking insulation boards, the heat conductivity coefficient is reduced, the good heat insulation effect, the good sound insulation effect and the good fire disaster preventing effect are achieved, and external wall insulation materials and construction cost are avoided.