Thermal insulation outer wall structure for building

The utility model discloses a heat preservation outer wall structure for a building, and particularly relates to the field of outer walls, the heat preservation outer wall structure comprises a base layer wall body, side plates, panels, sealing plates and fixing devices, a bonding layer is arranged on the surface of the base layer wall body, and the two sets of side plates, the two sets of panels and the two sets of sealing plates are combined into a heat preservation plate shell through the fixing devices; a connecting device is arranged on the surfaces of the two sets of side plates and the surfaces of the two sets of sealing plates and comprises two protruding blocks, the two protruding blocks are fixedly connected with one side plate and one sealing plate respectively, rubber sleeves are fixedly connected to the surfaces of the protruding blocks, grooves are formed in the side plates and the sealing plates of the protruding blocks, the sizes of the grooves are matched with the sizes of the protruding bloc