The invention discloses heat-preservation building blocks for blocking a heat bridge and a heat-preservation masonry comprising the heat-preservation building blocks. The building blocks comprise building block bodies, covering layers and heat-preservation material cavities which are formed between the building block bodies and the covering layers, wherein heat-preservation materials are inserted into the heat-preservation material cavities; polystyrene boards are taken as the heat-preservation materials; two ends of the heat-preservation materials are slightly exposed out of the heat-preservation material cavities by a length being L; the masonry comprises a plurality of the heat-preservation building blocks; the heat-preservation building blocks in the same layer are connected from head to tail and bricked together; the adjacent heat-preservation building blocks between an upper layer and a lower layer are arranged in an aligned joints manner or arranged in a staggered joint manner; sections of the polystyrene boards, which extend out of the heat-preservation material cavities in the adjacent heat-preservation building blocks between the upper layer and the lower part, are compressed and squeezed in the presence of the gravity of the heat-preservation building blocks so as to partition adhesive mortar of the part, so that a heat bridge is blocked and the heat-preservation property of the masonry is improved.