Knowledge Management Platform plays an important role in helping spread knowledge of individuals or groups across organizations. Many current knowledge management platforms met with deficiencies of poor tacit knowledge exploitation, slow knowledge update, limited knowledge sharing and weak user participation. This paper attempts to find solutions to those problems by integrating Web2.0 with knowledge management, and design a Web2.0-based Knowledge Management Platform. A Web2.0-based knowledge management model is put forth, and the framework and technology architecture of our platform has also been researched.