Heat-insulating and fireproof structure of building outer wall

The utility model discloses a heat-insulating and fireproof structure of a building outer wall, which consists of a finishing coat (1), a rendering mortar layer (2), alkali-resisting fiberglass gridding cloth (3), fireproof isolation strip boards (4), a vitrified hollow bead light mortar layer (5), an organic heat-insulating board (6), a polymer binding mortar layer (7) and a base course wall body (8), wherein a fireproof compound heat-insulating board of the heat-insulating and fireproof structure is formed by compounding the inorganic vitrified hollow bead light mortar layer (5) and the organic heat-insulating board (6) and overcomes the defects of high volume-weight and poor heat-insulating performance of an inorganic heat-insulating material as well as poor fire resistance of an organic heat-insulating material; and the fireproof isolation strip boards (4) are made of an inorganic incombustible material and have consistent thickness with that of the fireproof compound heat-insulating board. The fireproof isolation strip boards (4) are attached to lintels of doors and windows to form fireproof beams for enhancing fireproof isolation together with fireproof isolation strips, thus the higher fireproof requirement of the building can be met.