Waterproof heat preservation building outer wall structure

The utility model discloses a waterproof heat preservation building outer wall structure, which belongs to the technical field of building outer wall structures and comprises a wall body, a waterproof layer fixedly connected to the side face of the wall body, a heat preservation layer fixedly connected to the side face of the waterproof layer, a sound insulation layer fixedly connected to the side face of the heat preservation layer, and gridding cloth fixedly connected to the side face of the sound insulation layer. A plurality of drill holes are formed in the surface of the wall body, a plurality of first through holes are formed in the waterproof layer, the heat preservation layer, the sound insulation layer and the gridding cloth, fixing assemblies are movably connected into the first through holes, a stepped circular groove is formed in the sound insulation layer, and a foam plug is clamped into the stepped circular groove; the external wall structure has the advantages that the waterproof performance is