Abstract: Abstract: An innovative product design method based on intangible cultural heritage (ICH) and extensible semantics is proposed aiming at the problem of insufficient effectiveness of implicit knowledge representation and transfer approach to ICH during the process of product innovative design using ICH. Representative cultural elements and cultural characteristics are extracted by analyzing the source culture, to establish the extensible semantic representation model, so as to acquire the quantitative relations between cultural characteristics and ICH. The paper calculates the extensible design space of cultural characteristics, converts it into graphical semantics by utilizing the graphical thought, to acquire the core graphical semantic set with the featured ICH elements based on extensible conversion. In addition, the paper constructs the extensible graphic element library, to provide basic materials for designs. By taking the model design for intelligent charging service facilities for electric cars as an example, this paper verifies the feasibility and the rationality of the approach. According to research findings, the extensible semantic analysis can be utilized to improve the extraction and utilization efficiency of ICH elements, providing supports for model designs of ICH innovative products.

Key words: Keywords: intangible cultural heritage, tacit knowledge, extension semantic analysis, service product design