Self-heat-preservation building block

The invention relates to the technical field of heat preservation of building wall bodies, and in particular relates to a self-heat-preservation building block. The self-heat-preservation building block comprises the following components of water, rock wool, cement, glass beads, graded sand and graded stones and is formed by mixing the components. According to the self-heat-preservation building block, the rock wool is added into a building block body; the high heat preservation property, the high flame resistance and the high tensile strength of the rock wool are fully used, so that a heat preservation layer does not need to be added into the building block body, and bearing and heat preservation can be integrated; the building block is high in self-heat-preservation property and contracting and cracking resistance capacity, so that the shortcomings of many cracks and inapplicability to sticking of blocks which are caused by an inner heat preservation additional layer or an outer heat preservation additional