Culture, as an intangible piece of heritage, is one of the priorities of sustainable conservation. With the rapid modernization of science and technology, traditional culture that is expressed in the form of sound is facing prominent problems related to inheritance and development. Thinking about how to integrate traditional culture into the daily life of the public is an important way of solving sustainability problems related to traditional culture. This study took Guqin culture as its research object, explored the possibility of using sound as an interactive medium, and considered how to present traditional culture to the public in public space to broaden the inheritance and development mode of Guqin culture. Therefore, this study proposes a public Sound Interaction Design Model oriented to sound and presents a public sound-interactive installation with different levels based on the model. The feasibility of the model is verified through an interactive design evaluation method, and the role of the model in sustainable cultural development is discussed.