By copying various excellent indoor home improvement renderings with 3DMAX, we can learn from the functional layout: the variability of functional partitions, the rationality of people flow lines and other multi-dimensional thinking; In terms of design style: copying excellent interior decoration drawings can establish a three-dimensional and all-round thinking mode and experience the application of design style 360 degrees; Material selection: copying 3d renderings can make people realize the obvious changes brought by the texture and texture of materials to the design, so as to choose the best scheme; Lighting design: renderings can intuitively show the influence of lighting on indoor space environment, and help designers to measure the use of lighting color temperature and illumination.