Abstract When approaching issues in either environmental design or behavioral design, researchers invariably consider both environment and behavior. However, to date, academia still lacks a systematic theoretical perspective for viewing the relationship between environmental design and behavioral design. This article explores the characteristics of environmental and behavioral design and introduces a new domain named environmental-behavioral system design (EBSD). EBSD provides a conceptual framework for researchers and designers to envision a future where mutual aesthetics and confidence emerge among different environmental-behavioral systems. With such a framework, people in each environmental-behavioral system could live more authentically and meaningfully.