Abstract:The study of knowledge sharing among farmers is of great practical significance for promoting the diffusion of agricultural technology. The relative research has accumulated a certain amount of achievements, and currently it is necessary to sort out and integrate its research context. On the basis of literature review, the connotation of knowledge sharing among farmers is concluded and redefined, and a research framework is constructed from three dimensions. That is, factor, process and function. First, on the factor dimension the subject, object, information channels and sharing environment are analyzed; second, the process of knowledge sharing among farmers is divided into sub-processes including knowledge spillover, knowledge learning, knowledge transfer and knowledge innovation, which are systematically discussed; third, the active influence of knowledge sharing behaviors among farmers on promoting the adoption and promotion of agricultural technology as well as improving the development of agricultural industrial chain is considered comprehensively. Finally, four potential future research trends are proposed on the basis of comprehensive analysis of existing research framework and the new circumstances of the development of Chinese agriculture.