Cluster firm’s innovation capability is influenced by multiple embeddedness such as regional culture, netwok stucture and ralation of knowledge network.Through empirical research on clusters of Shaoxing and Wenzhou,we find that different dimensions of regional culture have important influences on the structure and relationship of firm’s knowledge network, which in turn brings different effects to firm’s exploratory innovation and exploitative innovation.At the same time, based on firm’s low investment in innovation, it should be from the perspective of whole innovation process and specific context to analyze the role of knowledge network.