In order to improve the knowledge diffusion effect in Open Source Software Community (OSSC), we built a
mult agent-based modle to simulate the whole process of knowledge diffusion in OSSC. First, by analisying real OSSC, a
open source software community model was built. Second, mechanisms such as knowledge diffusion mechanism, partnership
selection mechanism, knowledge learning mechanism and knowledge spillovers mechanism and sever collabortion
mechanism were given. Further, by using multi-agent modeling tool and MATLAB software, the current research modeled
knowledge diffusion in OSSC and investigated the effect of members’ knowledge distribution on the performance of
knowledge diffusion. Results show that higher initial knowledge variance in OSSC knowledge diffusion process would
lead to higher knowledge efficiency, fewer knowledge diffusion path, and lower equity.