Abstract:Aiming at the characteristics of collaborative product innovation system (CPIS) knowledge dissemination, the mechanism of CPIS knowledge dissemination was studied on the micro level of organizational knowledge activities. Through analyzing the process and impact factors of the CPIS knowledge dissemination, and consulting the SIS epidemic propagation, we extracted the parameter variables from the influence factors of knowledge dissemination process, and proposed the K-SIS model based on cellular automata for analyzing the knowledge dissemination of CPIS. Finally, measured by the average level of team’s knowledge and the standard deviation of knowledge level, the K-SIS was applied to analyze the impact upon the knowledge dissemination process by factors like knowledge stickiness, trust, team collaborative association intensity, knowledge forgetting, etc. The results may provide valuable ideas for the efficiency of CPIS knowledge dissemination.