With the continuous development of finance, the financial department is gradually transformed from an efficient department to an inefficient one with high power. Blockchain technology is decentralized and data cannot be modified, which caters to the demand of financial sharing services and promotes the rapid professional application of blockchain technology. This paper introduces the financial sharing service system driven by information technology. This system further optimizes yonyou NC financial and supply chain system, and configura ORACLE Hypolon total Budget management system, Micro-ecologyoa and financial sharing service system. The built-in intelligent information processing model includes two: first, block SHA256 verification, mathematical model reference formula (1); Second, the new block to obtain accounting rights, mathematical model reference formula (2). The basic operation principle of financial shared service digital system based on block chain technology is to use formula (1) to SHA256 check the new block information; Then formula (2) is used to obtain new accounting rights for all new blocks that have passed verification. This paper studies the assessment design of digital financial sharing service system based on block chain technology, focuses on the principle of block chain technology, and expounds the relevant content of assessment design of digital financial sharing service system. In the data test, refer to Table 1 and Fig. 2 in Part 4 of the paper. The assessment design of digital financial sharing service system based on blockchain technology has a more efficient performance in the assessment design of digital financial sharing service system.