The wide and narrow metal exterior wall decorative panel is composed of three parts. The upper part is made of galvanized steel sheet (high-quality aluminum alloy board). The surface is made of special weather-resistant special coating. After special coating process, different colors are applied on the surface according to the needs. It is rolled into different patterns and patterns by special metal embossing equipment, and after multiple paintings, it forms a variety of embossed three-dimensional patterns. Can meet the architectural appearance and color appearance requirements, to achieve a certain visual artistic effect. A hard, high-density, environmentally-friendly polyurethane foam that is flame retarded is used in the middle. Insulation decorative panels with different foaming thicknesses can be used in different areas. The bottom has a protective layer of moisture-proof, heat-insulating, flame-retardant aluminum foil, glass fiber grade or high-quality steel plate with different needs of customers.