It is of great theoretical and practical significance to explore the mechanism and intensity of knowledge sharing influencing factors in collaborative information seeking and retrieval. Based on the related literatures,this paper constructs a comprehensive index function of knowledge sharing degree in collaborative information seeking and retrieval from the dimensions of agents,interaction among knowledge sharing agents,and interaction between knowledge sharing agents and environment. And the paper uses Matlab to visualize the impact of influencing factors in different dimensions on knowledge sharing trends dynamic evolution characteristics. The influence of self-efficacy in knowledge sharing is more significant than that of knowledge structure in knowledge sharing agents. The impact of communication among agents is significant on knowledge sharing,and if the physical and space distance and social relationship are maintained at an appropriate level,they can effectively promote knowledge sharing. Both the real-time situation and techniques can influence the knowledge sharing at similar degree.