The invention discloses a financial
information sharing system and method based on a block chain, and relates to the technical field of block chains, and the method comprises the steps: integrating block chain intercommunication financial information in an enterprise, collecting the financial data of the enterprise, carrying out the preprocessing, structuring and data
encryption, obtaining the priority
score YX of each business
record, and obtaining the priority
score YX of each business
record; the method comprises the steps of obtaining first priority financial data and second priority financial data in combination with a preset priority
score threshold YZ, storing the first priority financial data and the second priority financial data in a block chain and an under-chain auxiliary node respectively, constructing a
hash tree model according to the financial data of the block chain, generating a multi-dimensional index for financial
data query, and compiling an intelligent contract for abnormal
financial transaction recognition. According to the method, data collaborative analysis is carried out on abnormal financial transactions, and abnormal data is repaired according to a data collaborative analysis result, so that the consistency and integrity of on-chain and off-chain data are realized, and the efficiency, transparency and security of financial
data sharing are improved.