The invention provides a high performance autoclaved aerated concrete composite self insulating building block. The high performance autoclaved aerated concrete composite self insulating building block comprises an autoclaved aerated concrete block body and an ultra-thin vacuum insulation plate which is arranged in the autoclaved aerated concrete block body. A blind hole drawer type cavity is formed in the autoclaved aerated concrete block body. The ultra-thin vacuum insulation plate is located in the blind hole drawer type cavity. An air interlayer is formed between the blind hole drawer typecavity inner wall and the ultra-thin vacuum insulating plate. According to the high performance autoclaved aerated concrete composite self insulating building block, a structure completely covering the vacuum insulation plate in the block body can effectively improve the durability and the service life of the vacuum insulation plate, and avoids the fact that the thermal preservation and insulation effects of the vacuum insulation plate is reduced due to external environment changes; the block body and the air interlayer can effectively protect the vacuum insulation plate from puncture damageand extrusion deformation by external objects, requirements for weather resistance, frost resistance and impact resistance and the like of the vacuum insulation plate itself in thermal preservation and energy saving are reduced, and the effective protective effect on the vacuum insulation plate are achieved.