Complex network is becoming one of the effective research method for knowledge management. However, the building method for the complex network is the first problem that must be addressed. The e-EPC process case modeling method was adopted in the paper to solve the problem. The building method mentioned in the paper can provide a simple way to construct a knowledge resource complex network which can be used to analyze the innovation ability of an organization, or help to distribute knowledge resources to a business process. The scale-free parameters analysis based on the network, such as average path length, cluster coefficient, provides a helpful digital reference for knowledge management and decision.