We propose a method in this paper which improves the speed and effects of visualization process in product concept design. In digital product design software, the preview mode and render mode are for simple usage without optimization. The designers need to adjust the view by themselves. To improve the preview result for more usability, we defined a method based on aesthetical rules. The rule defines the virtual camera used in design software in which how target object will be shown. Then it is used to compute the movement of the camera in virtual environment. The movement path is computed automatically among different preview angles for even different preview targets.