隨著時代的演進，城市環境空間不斷轉變與發展，促使生活的環境中到處可見公共藝術的設置。但因為現今公共藝術的形式眾多，設置在人們生活的環境中能否美化環境以及與人民有所互動是有待探討的。國內有關公共藝術之研究大多探討公共藝術、人與環境互動以及參與關係，較少是針對公共藝術與支應性、互動行為傾向之研究。因此本研究藉由支應性的概念探討觀賞者與公共藝術品之間互動關係，並瞭解不同觀賞者個人特質產生的支應性知覺和互動行為傾向是否有所差異。研究以台中市的草悟道、勤美術館、科博館、經典綠園道為實證研究範圍，調查對象為與藝術品有所互動行為的觀賞者，取樣方法則採立意抽樣方式進行，共獲得有效樣本406份。藉由典型相關、t檢定與ANOVA分析之結果，得出以下結論：1.公共藝術支應性感知對不同互動行為傾向具有相關性，顯示受測者的公共藝術支應性的感受愈高，與公共藝術品的互動行為傾向的感受程度越大。2.觀賞者社經背景不同，對公共藝術支應性感知、互動行為傾向有顯著差異。實證研究之結果，可作為日後公共藝術品的設置、管理維護與設計規劃上之參考依據。

Time evolution, unceasing urban environment space transformation and development urge public art installation to be seen everywhere in our living environment. It needs a further discussion whether various public art installations nowadays in our living environment beautifies the environment and interacts with the public. Most of domestic researches relating to public art discuss the relationships among public art, interaction and participation of human and the environment. Fewer researches aim at public art, affordance and interactive behavior intentions. Thus, this research adopted the concept of affordance to discuss the interrelationship between audience and public arts, and attempted to understand if there is any difference between affordance and interactive behavior intentions generated by different public arts toward audience. Calligraphy Greenway, CMP Block Museum of Arts, Museum of Natural Science and Park Lane by Splendor in Taichung city are the basic researching areas. Research subjects are the users who have interactive behavior with arts. Purposive sampling was used to collect data. There are total 406 effective samples. Canonical correlation, t-test and ANOVA were used to examine data. The result showed: 1. there is a correlation between perceived affordance of public art and different interactive behavior intent ions. The higher the perceived affordance of public art that research subjects have, the higher the perception of interactive behavior intentions on public art. 2. There are significant differences between audience with different socioeconomic statuses toward perceived affordance of public art and toward interactive behavior intentions on public art. Results according to the empirical research provide the reference basis for future public art installation, management and maintenance and planning and design.