With the improvement of living standards, modern households have increasingly stringent demands and expectations for children’s furniture. However, the blind pursuit of multifunctionality and diverse requirements often contradicts the principles of sustainable development. This study approaches children’s furniture design and development by integrating the KANO model, life cycle concept, and TRIZ theory, shifting the application of life cycle assessment (LCA) from traditional end-product evaluation to the initial design stage. By incorporating policy regulations and literature analysis, we identify essential green design requirements during the design process. Using the KANO model, we precisely identify user needs and apply TRIZ theory to resolve potential conflicts between green design requirements and user demands, ultimately deriving innovative design solutions. A case study on the design and development of a game-oriented children’s dining table demonstrates that our approach effectively meets consumer needs while adhering to sustainable development principles. This method not only satisfies the specific requirements of children’s furniture design but also establishes a new paradigm for integrating sustainability into the design and development of various products. The proposed approach provides valuable insights and practical solutions for designers aiming to create environmentally friendly and user-centered products.