The PiLi-puppet to got the number one in the Taiwan-imagery-vote in 2006, It has performed in many countries in recent years. This study is mainly based on the form and preference of the "knife" in the weapon. First, through the focus group, the parts of the knife and the words of the words are extracted, and then, after a two-stage questionnaire survey. After the data was collected, it was found that the form of the combination of the preferred knife and the knife was biased towards the "simple" and "classic" images; while the shape of the knife without the preference was "complex" and "The image of the popular. After the results are discussed, I look forward to the results of this research, which can be used as a reference for future research scholars and geek jewelry designers.