Knowledge is a powerful strategic weapon for organizations to gain sustainable competitive advantage. So knowledge management is paid much more attention by organizations. Many empirical models focus on the knowledge creation process (KCP) in the knowledge management. Based on the knowledge creation process which Nonaka put forward, this thesis analyzes four components of KCP (socialization, externalization, combination and internalization), four influencing factors of KCP(ability, characteristic, information redundancy and leadership) and task characteristic moderating the relationship KCP and organizational creativity through case study, which proves and extends the research model by Lee and Choi put forward in 2003.