The advent of a knowledge age,the critical factors of a survival andsuccessful business are knowledge sharing and derivative knowledgeassets between individual and group in an open information environment.Consequently, our research based on Porter's "value chain model" and adaptedhis "linear" model for "network" knowledge sharing model. And then theadapted model integrated with Nonaka's "organizational knowledge creatingprocess" to construct the "knowledge value chain model" of a business.So the model can express the dynamic relations of sharing and creatingknowledge.For implanting the knowledge management mechanism in business operationalactivities, we proposed new analysis processes of an information system. Themethod analyzes organizational knowledge structure in a culture aspect asculture knowledge, and subsumes the aspect under information system analysisand design. According to the different level of the knowledge workers as culture groupings, we proposed standard model objects as knowledge agents. Interalios, the three level of agents represent different demands in different context group. During constructing knowledge management system,we used object-oriented software engineering in system developing method,for example the use case model.Therefore, the knowledge management system contain two analysis dimensions.One is the knowledge agent which reprents organizational knowledge managementstructure. The other is the object model which display business daily operations.In our research, we illustrated the knowledge management system with the marketing corporation.