This study analyzes the connotation of design knowledge for design excellence in design awards and constructs the design knowledge ontology structure in design excellence by introducing the concept of ontology, thus building an ontology-based design knowledge modeling for design excellence in design awards. After the theoretical study, taking the Intelligent City Services Platform in Design Intelligence Award (DIA) as an example, this study defines the concepts, attributes and relations through linguistic logic and semantic research, so as to build the Design Award Knowledge (DAK) model. With the help of knowledge mapping, this paper identifies the semantic representation of DAK in the Intelligent City Services Platform category. The results of this study provide both theoretical support and practical reference for the storage, management, and reuse of DAK.