微型應用程式夾帶著類型多元與價格優勢崛起，為市場帶來完全不一樣的商業模式，如何透過獨特且精緻的圖標設計，做強有力的廣告宣傳，成為致勝之關鍵。本研究針對 100件數位應用程式圖標設計代表性樣本，進行圖標設計風格分群調查，目的在瞭解數位應用程式圖標設計風格認知與設計要素之間關係，並利用「集群分析」，歸納出典型數位應用程式圖標設計風格類型及其特徵，期望對數位應用程式之圖標設計，於創意表現和視覺傳達功能上發揮最大功效。透過第一階段研究結果，歸納出五類圖標設計之視覺風格典型，並依據每一集群之共同特徵進行命名，分別為：「特徵強化」風格、「向量造形」風格、「功能演示」風格、「文字編排」風格、「主題表現」風格，然而每種風格所呈現的風格特徵屬性因其辨識風格類目使用上之不同而有所差異，藉以呈現數位應用程式系統圖標設計風格之多元面貌；透過第二階段研究結果，發現影響受測者對數位應用程式圖標設計之風格辨識依據，主要分為：製作題材、表現技法、色彩配置、版面構成、外觀造形五大重要設計風格辨識要素，而從受測者分群的方式與訪談過程中發現，數位應用程式圖標設計之風格分群，最容易受到「表現技法」、「製作題材」要素影響，受測者多以上述兩種風格辨識要素做為主要設計風格區分之依據，其次才是版面構成、色彩配置與外觀造形。

Emerging with their diverse categories and price advantage, micro application programs bring the market a totally different business model. The key to success thus lies in powerful advertisement and promotions through unique and exquisite icon design. In this study, Multidimensional Scaling, Questionnaire Survey, and Interview were used to conduct a clustering investigation of icon design styles based on 100 representative icon design samples of digital application systems. The analysis was aimed to understand the relationship between the design style cognition and design elements of the icons of digital application systems and to generalize typical icon design styles and features of digital application systems through clustering analysis in hopes of generating maximum efficiency in the icon design of digital application systems in terms of creative expression and visual communication. In total, 5 visual styles of icon design were categorized according to the first-stage research result, and based on the common features, each style was named. The styles were respectively Feature Enhancement, Vector Symbol, Function Display, Lettering Layout, and Topic Presentation. However, the characteristics that each style showed varied according to the style cognitive categories, by which the multiple aspects of the icon design styles of digital application systems were displayed. The second-stage research concluded that the basis for the participants to perceive the icon design styles of digital application systems included five major design style cognitive elements, respectively Production Theme, Expression Technique, Color Configuration, Layout, and Appearance. It was found from the participant clustering method and the interview process that Expression Technique and Production Theme most easily influenced the icon design style clustering of digital application systems. Based on the two aforementioned cognitive elements, most of the participants differentiated the design styles. The following elements were Layout, Color Configuration, and Appearance.