Abstract: In the design fields, graphics are often a medium of communication whose goal is to reach mutual understanding. The process of graphic abstraction is one of the most important methods in visual design. Designers often use it to enhance the recognition and impression of observers. This paper investigated abstraction methods through design software research and research of designer practices. The result showed that the major tools used in designer practice are paintbrushes (traditional hand-drawing medium) and software filters (computer media). Three abstraction methods were identified: a) shape simplification method, b) quantitative reduction and c) software-aided simplification. Designers used software programs mainly for simplification of overall image (plane) with comparatively little use to simplify 'points' or 'lines.' In addition, the design software cannot fulfill designers' needs for visual abstraction. The findings from this study can provide valuable references for user instructions, graphic design and computer-aided design applications. INTRODUCTION To turn a real object (3D) into a 2D representation is an example of graphicabstraction in visual design, (see figure 1; Arnheim, 1969; Langer, 1953; Yo, 1985; Hsu, 1993). The abstraction uses a strategy of simplification of detail, so designers often simplify the shape of the original object to enhance the recognition or impression of observers (Arnheim, 1969; Bell, 1913; Gombrich, 1982). Thus, abstraction is one of the most important methods in graphic design. The function of graphics is to communicate messages efficiently and accurately in human life. As a result, the rational analysis of graphics and their uses might help to enhance that efficiency and accuracy. Although an analysis of rules in the field of graphic design seems more challenging than in the fields of architecture or industrial design, as far back as in the Renaissance, Leonardo Da Vinci proposed that painting should be approached with a scientific aspect. Mistakes are likely to occur, he suggested, if structures and outlines are drawn from impression, rather than using the tools of measurement. Modern-design methodology attempts to scrutinize design scientifically. Although there are still gray areas in which science cannot give an account, the methodology has a significant bearing on user instructions (Burden, 1996; Jones, 1992; Munari, 1989). With the development of digital technology, the application of design methods can be transformed into the computation that has also presented itself as an important research topic (Kirsch S Kirsch, 1988; Knight, 2003; Simon, 1981; Stiny & Mitchell, 1978). Therefore, discovery of the 'methods' behind design is beneficial to both user instruction and design computation. RESEARCH FRAMEWORK This research is a case study that exploras graphic abstraction in digital and traditional media. This paper investigates abstraction methods through design software research and design practice research. First, in order to reflect the trend that modern design depends heavily on software, software that serves abstraction functions was examined in the design-software research section. Four of designers' favorite software are analyzed: Adobe Illustrator 10, Adobe Photoshop 7, Macromedia Fireworks MX, Macromedia Flash MX. second, to understand the work of designers currently using graphic-abstraction methods, thirty-two Shih-Chien University sophomore and junior students, equipped with design expertise, were surveyed with regard to their practice. LITERATURE REVIEW Abstraction process model 'Abstraction' is widely discussed in philosophy, science and psychiatry. The Gestalt School is the earliest school of art to systematically carry out this type of study. They presented the law of Pragnanz, which states that the best form is the form that has been 'appropriately simplified.' This is because people's visual perception leans towards using the most economical method to receive information (Arnheim 1969, 1974). …