The invention discloses an exterior wall external insulation composite wall provided with a support, and relates to a
thermal insulation composite wall of a building. The invention aims at solving the problem of inconvenience for construction of a concrete support
cantilever beam of a public exterior wall external insulation composite wall provided with the support. The exterior wall external insulation composite wall is characterized in that the inner end of a steel truss
cantilever beam and a building main body structure or a substrate wall are fixed, an insulating layer is located outside the substrate wall, and a reinforcing
steel bar is arranged outside the insulating layer; the reinforcing
steel bar is connected with the steel truss
cantilever beam, and a
metal net and the reinforcing steel rib are fixed; the reinforcing
steel bar and the
metal net are located in a protecting layer, and the protecting layer is connected with the insulating layer; and the reinforcing steel bar and the building main body structure are fixed by internally and externally pulled steel wires. According to the invention, the steel truss cantilever beam can be arranged in the concrete through embedding a steel plate or planting the bar, a concrete template is not destroyed, installation labor and consumption of
welding materials can be saved, the construction is convenient, the cost of construction is reduced, the energy-saving
thermal insulation effect of the wall is increased, and obstacles of applications of the conventional
building energy efficiency reconstruction projects are cleared.