Decoration and heat preservation device for outer wall of building

The utility model relates to the technical field of heat preservation decorative plates, in particular to a building outer wall decoration heat preservation device which comprises a wall body, a plurality of heat preservation plates are fixedly connected to the wall body and are sequentially spliced end to end, every two adjacent heat preservation plates are fixedly connected through a second clamping strip, and waterproof decoration parts are arranged outside the heat preservation plates. An anti-skid part is arranged between the insulation board and the wall body; the heat preservation plate comprises a heat preservation plate body, a protrusion is arranged at the top of the heat preservation plate body, a groove is formed in the bottom of the heat preservation plate body and matched with the protrusion, third T-shaped grooves are formed in the heat preservation plate body in a bilateral symmetry mode, and a first installation part is clamped in the third T-shaped groove located on the side close to the wal