Abstract: It is of great significance to analyze the mechanism of knowledge sharing in supply chain network to promote knowledge flow and the development of green supply chain. As the green supply chain under the industrial agglomeration scenario presents the obvious network characteristics, the green knowledge flow and sharing process among members also has its particularity. Therefore, it is necessary to conduct in-depth research on the knowledge flow mechanism under the agglomeration scenario.Based on the agglomeration scenario, the logic of the establishment of green supply chain network convention and the mechanism of green knowledge sharing are investigated, and a conceptual model of heterogeneous knowledge— network convention— knowledge sharing is constructed. On the method, the structural equation model is used to analyze the mediating role of the network practice, the multi-level regression is used to the moderating role of agglomeration situation, Anylogic software is used to the presence of agglomeration scenario simulation of knowledge sharing, and multidimensional quantitative method is used to analyse network practices and agglomeration scenario on the influence of heterogeneous knowledge sharing.In terms of data sources, 460 questionnaire data from China's national eco-industrial park are selected for empirical test and simulation by combining online and offline methods. The conclusion shows that the heterogeneous green knowledge among the members of the green supply chain determines whether the alliance can establish stable and reliable network practices in the process of green cooperation. Among them, the scarcity and inimitability of green heterogeneous knowledge have a great positive impact on the establishment of network conventions.The agglomeration scenario plays a positive regulating role in the relation chain of heterogeneous knowledge - network convention (normative recognition) - knowledge sharing speed in the green supply chain. Therefore, it is necessary to give full play to the knowledge spillover and diffusion effects of agglomeration, embed the green supply chain platform into industrial agglomeration, and actively explore the heterogeneous knowledge management mode of green supply chain under the integration of industrial agglomeration.The research explains the initiative of green supply chain enterprises to acquire external knowledge from the perspective of network governance, so as to provide guidance for the effective integration of knowledge of green supply chain, and at the same time provide guidance for the policy practice of eco-industrial parks in China.

Key words: green supply chain; network practice; heterogeneity knowledge; agglomeration