Composite heat insulation building curtain wall structure

The invention relates to a composite heat insulation building curtain wall structure which comprises a curtain wall keel, a steel plate layer, a heat insulation curtain wall plate and a coating. The steel plate layer is fixed at the back of the heat insulation curtain wall plate and fixed onto the curtain wall keel through fasteners, the coating is arranged on the front surface of the heat insulation curtain wall plate, the heat insulation curtain wall plate is a double-layer plate, and the middle of the heat insulation curtain wall plate is filled with fireproof heat insulation materials. Thestructure has the advantages that a curtain wall has fireproof heat insulation functions, the structure is used for the outside of a building wall, fireproof heat insulation functions can be effectively achieved, mutually vertical wave-shaped steel plate structures are formed in the curtain wall structure, the curtain wall structure is firmer under the action of wave-shaped steel plates, deformation is difficultly genera