Abstract:Knowledge transfer is the essence and necessary process of Industry-University-Research(I-U-R) collaborative innovation activities. The concept of the I-U-R collaborative innovation team is defined, and the features of the I-U-R collaborative innovation team are expounded from the target level, operation level and organization level. According to the above analysis,the unique features of knowledge transfer in the I-U-R collaborative innovation team are discussed from the task complexity, knowledge depth and width among the transfer subjects, the knowledge characteristics, the establishment time of the trust relationship within the team and multiple regulation. In the end, the connotations of knowledge transfer in the I-U-R collaborative innovation team are interpreted from the target, elements, process and key aspects.