本研究主要是著眼於設計中速寫所扮演的角色，通過兩個階段的實驗，第一階段為觀看影片後進行速寫，第二階段是通過第一階段速寫的成果，進行不設限類別的產品設計，參與實驗的受測者是具設計專業背景的大學學生，從具象圖面、轉化為設計草圖，再轉化為產品設計一系列的過程。實驗資料觀察和分析採用Pierce論述「semiotics」的3種形式進行驗證，主要具體發現如下：1.由大象速寫與第二階段設計運用的過程中，設計轉換的跡象具有符號學理論的基礎。2.經由受測者的回饋，得知黑白分明的速寫線條，比具有顏色的線條，更容易激發創作者靈感，以及更具有創新的想法。3.透過的速寫可以誘發從圖案形象變化，置換本質，而獲得到預期產品設計新的含義。研究結果發現速寫，在思想發展的階段，速寫不僅是一個表達工具，但也可以是一個創意和溝通之間發展理念的聯繫，同時具有符號學的理論基礎。

This paper looks at the roles of sketch in relation to design. It is found that the sketch, especially in the stage of ideas development, is not only being as a tool for representation but also being as a link between creation and communication for idea development. An experiment of conducting design students to draw a figurative an elephant and transforming them into product design sketches was carryout. Data gained from the experiment was observed and analyzed. Major findings from this experiment include: 1. Sketch or drawing process of the transformation between signs, in the case of the present study is that the figurative drawing elephant were transformed to the abstract forms of designed product, which is the main focus of the theory of Semiotics. 2. Sketching by using lines are easier than by using colors in initiating ideas. 3. Through sketching, it is possible to transform the original meaning gained from figurative drawing to new meaning of the intended product design.