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Organic certification system is an important part of organic agricultural production network. As the core of information network, Organic certification agencies are pivotal to our understanding of the structure, organization and effects of the network. This paper, taking the spatial distribution, organization and the influential area of the information center as the basis, suggests that the information network of organic agriculture in China is characterized by high degree of unevenness, and hierarchical order in development level. The analysis shows that the whole network can be divided into three tiers. Through a case study of some key areas such as Beijing, Zhejiang and Liaoning, the study put forward some suggestions for the sustainable development of organic information network.