Hand-painted technology occupies a place in the history of ancient architecture development. At that time, architects were all generalists, who could integrate design and performance. Michelangelo was an architect and engineer; At the same time, he is the ancestor of painters and sculptors in architectural education. Now, with the development of modern hand-painting, society needs exquisite design. In a sense, it needs a fine division of labor and gives full play to its strengths. Western countries have already done so. In recent ten years, the maturity of computer and software has bred a group of excellent computer drawing technicians, which have already appeared at home and abroad. In recent years, many professional rendering and model firms have begun to appear in China, which can form a professional workforce. In a sense, their work is the recreation of architects' creative work.