Purpose The dissemination of tacit knowledge is an effective way for enterprises to acquire tacit knowledge, which is very important for improving the national economy and its own development.Method First, a tacit knowledge dissemination model of cluster enterprises considering government incentive mechanism is constructed in uniform network and non-uniform network respectively; second, the stability of the model is analyzed and the dissemination threshold is obtained; finally, Matlab software is used for the numerical simulation analysis of model parameters.Conclusion The research results show that the dissemination rate and the number of initial disseminators considering the government incentive mechanism are proportional to the dissemination of tacit knowledge; the network structure has a significant impact on the dissemination of tacit knowledge among cluster enterprises, and the greater the average degree, the better the network, which is conducive to the dissemination of tacit knowledge.