Abstract: Based on the research of relevant theories and the main body and content of low carbon supply chain information sharing, this paper proposes a low carbon supply chain information sharing strategy based on blockchain big data. The supply chain network system, information sharing model and information flow hierarchy based on blockchain technology are constructed. The blockchain technology is used to improve the convenience, security and integrity of information sharing within the low carbon supply chain. Based on the information coupling theory, the information sharing coupling degree index is established to evaluate the practical application effect of the information sharing strategy. The statistical sample data shows that the information sharing degree in the low carbon supply chain is improved, which can reduce the total production value within the supply chain, and promote the overall efficiency of the supply chain and improve the operational efficiency.

Key words: economical scale, macro-control, low carbon, supply chain, block chain technology