With the development of the tourism industry, Xinjiang’s natural scenery has been favored by many tourists. During peak tourist seasons, tourists are in an endless stream, and Xinjiang’s "spit bus" has become one of the beautiful scenery. The traditional spit bus has a single structure and simple functions, and it gradually breaks away from the development of the times. Based on the CAD fractal graphics technology, this paper studies a new type of automobile structure-the Xinjiang "spit bus" naan stamp structure, which is realized by using the 3D design visualization framework of CAD graphics. The structural design, damping simulation and force analysis of Tubus, the result is optimized by 7.2%.