The work aims to explore complex design needs through a scientific and standardized design process and methods, and integrate and guide the design research of a flowing tea table to establish a reference model. The design needs were extracted according to the user behavior flow method. Initially, basic design needs were collected through sliced participatory observation, non-participatory observation, and in-depth interviews. Subsequently, the Kano model was employed to assess the attributes of design needs, distinguishing between necessary needs, expectation needs, charm needs, indifferent needs, and reverse needs. On this basis, the tea table's design was executed by mapping design needs to specific objects and clustering functionalities. The functions were analyzed and the attributes were identified, resulting in the successful completion of the tea table design to meet all design needs and ensure its commercial viability. The combination of user behavior flow analysis with the Kano model is proved to be effective in extracting essential design needs while addressing complex functional integration challenges; However, it also relies on designers' experience.