Self-insulation concrete composite building block

The utility model provides a self-insulation concrete composite building block, and relates to the technical field of building materials. The self-insulation concrete composite building block comprises a structural layer, a composite layer and a connecting piece. And the composite layer is connected with the structural layer. And the connecting piece is connected with the structural layer and the composite layer at the same time, and connects the structural layer with the composite layer. The composite layer is connected with the structural layer, so that a cold bridge is prevented from being formed between the composite layer and the structural layer, cold air is prevented from flowing into a room along the cold bridge, and the heat preservation performance of the self-heat-preservation concrete composite building block is improved. And meanwhile, the composite layer has a heat preservation effect on the structural layer, and the structural layer is prevented from being frozen and thawed. The composite layer