Where should the realistic realism of virtual characters created by computer graphics begin? When producing animations of digital creators expressed in three-dimensional graphics, the workers involved in the visual effects of the movie agonize over how to visualize the unique nature of the characters. As a visual illusion, a sense of weight plays an important part in expressing the emotions and character of such an essential character. Despite the fact that several animation artists are involved in the production of such weight through collaboration at the animation production site, they tend to fail to recognize the production of weight as an important part of the production of digital fiction animations, and not to naturally coordinate the overall production in a unified and delicate manner. Because such a weight is indispensable for producing high-quality animations, it is necessary for all collaborative workers to be well aware of the success of animation business, and for watching the entire movie, a harmonious production is required, so skilled animators are needed. Weight can be analyzed around timing and spacing, and this paper will compare and analyze some comparative experiments and visuals based on the principles of animation to examine the visual illusion of weight, and it is expected to be helpful research when animation directors are looking for ways to emphasize weight in the Animation production.