Composite thermal insulation external wall panel

The utility model relates to the technical field of building wallboards, and discloses a composite thermal insulation external wallboard which comprises an external wallboard body, the external wallboard body comprises an inner thermal insulation board core and an outer thermal insulation board core, and gridding cloth is arranged between the inner thermal insulation board core and the outer thermal insulation board core. The gridding cloth is bonded and fixed to the inner heat preservation plate core and the outer heat preservation plate core through glue, the lower end of the side wall of the side, away from the gridding cloth, of the outer heat preservation plate core is fixedly connected with an inserting groove with an opening in the top face, and a panel is inserted into the inserting groove. According to the composite heat preservation external wall panel, the panel convenient to disassemble and assemble is arranged on the outer side of the external wall panel body, so that an operator can move the pan