Bio-design is evolving into a significant field of design under the paradigm of sustainability. The methods and types of design in this field are diverse, ranging from designs that utilize scientific knowledge and technologies from biology, to those that adhere to traditional, handcrafted methods using local materials or involving communities. Particularly, there is a wide and rapid expansion of attempts to harness new materials derived from organisms like plants and animals, as well as to apply natural structures, systems, and processes. Now, it is time to address the challenges of moving to the next stage. To this end, this study examines the current trends and future tasks for the expansion of bio-design by synthesizing case analyses of recent changes in the field and the content derived from interviews with experts in this domain. The results of the study reveal various issues and challenges, including the exploration of bio-design as an alternative in daily life beyond mere aesthetics, the initiation of mass production attempts, the emphasis on the meaning or value of design rather than the novelty of materials, the need for government or corporate-driven development, and the necessity for serious consideration of functionality and utility beyond stylistic aspects. This study aims to serve as a foundation for future discussions to ensure that bio-design continues to fulfill its role within the design industry and solidifies its position as a significant branch of industrial design.