This paper reported a practice on innovations attained through knowledge transfer in knowledge communities of a high-tech enterprise. In this case, leaders in advanced semiconductor packaging and testing technologies drove knowledge communities according to the company’s core abilities and organization learning strategies. Their remarkable practical knowing could be a paradigm for other high-tech companies. This paper discovered mechanisms of the intra-organizational knowledge networks, and the results showed that, the transfer of management know-how was facilitated by community competition and interaction. The knowledge transfer behavior intention (KTBI) was associated with four factors and it had a significantly positive impact on community members’ innovation. This paper provided a theoretical and practical model to support the transfer of knowledge and presented the value and functions of multifaceted innovation communities and organization learning. Key words: Knowledge community, knowledge transfer, innovation performance.