Heat preservation and decoration integrated outer wall structure and construction method thereof

The invention provides a heat preservation and decoration integrated outer wall structure and a construction method thereof. The outer wall structure comprises a structural wall body and a heat preservation and decoration integrated wallboard installed on the structural wall body, the heat preservation and decoration integrated wallboard is sequentially provided with a decoration surface layer, aconcrete layer and a heat preservation layer from outside to inside, the decoration surface layer and the heat preservation layer are fixedly combined into a whole through the concrete layer, a latticed steel member is pre-buried in the concrete layer, a plurality of through holes are formed in the latticed steel member to serve as mounting holes, the structural wall body is provided with a plurality of fixing holes, and the heat preservation and decoration integrated wallboard is fixedly connected to the structural wall body through installation components which penetrate through the mountingholes and stretch into th