In the context of the information age, intelligent creation has become a new way of creation derived from the combination of artificial intelligence and digital media art. Under the guidance of sustainable concept, this paper constructs an intelligent design system of environmental art. The production environment of the system constructed in this paper is 3dsMax software, and the color matching and dressing are carried out under Quest3D. Moreover, this paper studies the environment of computer video processing technology by using Quest3D’s environmental color conversion system to match spatial colors. In order to control the illumination effect in the environment, the system applies the ray tracing algorithm based on intersection optimization to the illumination effect realization process of the three-dimensional space design, and then obtains the best illumination effect of the environment. Finally, through experiments, this paper verifies that the intelligent design system of environmental art proposed in this paper can meet the actual needs of existing environmental art design.