This research takes the customer ordering service process of the hardware retail industry as the research scope. Based on the customer order service process data of the case company and the experience knowledge of the field personnel, the knowledge ontology is used to construct a set of knowledge blueprints. Together with the ontology editor Protégé, it is presented with framed graphics and tree branches. Let us clearly understand the structure of the ontology of knowledge, and use it to establish a knowledge management system based on the ontology to assist the individual enterprise to establish a more complete learning and management method.